81355560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{431}}^1$

素因数の和:480

約数の個数: 192

約数和(自身を含む): 289578240

約数和(自身を除く): 208222680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 20, 22, 24, 26, 30, 33, 39, 40, 44, 52, 55, 60, 65, 66, 78, 88, 104, 110, 120, 121, 130, 132, 143, 156, 165, 195, 220, 242, 260, 264, 286, 312, 330, 363, 390, 429, 431, 440, 484, 520, 572, 605, 660, 715, 726, 780, 858, 862, 968, 1144, 1210, 1293, 1320, 1430, 1452, 1560, 1573, 1716, 1724, 1815, 2145, 2155, 2420, 2586, 2860, 2904, 3146, 3432, 3448, 3630, 4290, 4310, 4719, 4741, 4840, 5172, 5603, 5720, 6292, 6465, 7260, 7865, 8580, 8620, 9438, 9482, 10344, 11206, 12584, 12930, 14223, 14520, 15730, 16809, 17160, 17240, 18876, 18964, 22412, 23595, 23705, 25860, 28015, 28446, 31460, 33618, 37752, 37928, 44824, 47190, 47410, 51720, 52151, 56030, 56892, 61633, 62920, 67236, 71115, 84045, 94380, 94820, 104302, 112060, 113784, 123266, 134472, 142230, 156453, 168090, 184899, 188760, 189640, 208604, 224120, 246532, 260755, 284460, 308165, 312906, 336180, 369798, 417208, 493064, 521510, 568920, 616330, 625812, 672360, 677963, 739596, 782265, 924495, 1043020, 1232660, 1251624, 1355926, 1479192, 1564530, 1848990, 2033889, 2086040, 2465320, 2711852, 3129060, 3389815, 3697980, 4067778, 5423704, 6258120, 6779630, 7395960, 8135556, 10169445, 13559260, 16271112, 20338890, 27118520, 40677780, 81355560]

約数ペア:

[(1, 81355560), (2, 40677780), (3, 27118520), (4, 20338890), (5, 16271112), (6, 13559260), (8, 10169445), (10, 8135556), (11, 7395960), (12, 6779630), (13, 6258120), (15, 5423704), (20, 4067778), (22, 3697980), (24, 3389815), (26, 3129060), (30, 2711852), (33, 2465320), (39, 2086040), (40, 2033889), (44, 1848990), (52, 1564530), (55, 1479192), (60, 1355926), (65, 1251624), (66, 1232660), (78, 1043020), (88, 924495), (104, 782265), (110, 739596), (120, 677963), (121, 672360), (130, 625812), (132, 616330), (143, 568920), (156, 521510), (165, 493064), (195, 417208), (220, 369798), (242, 336180), (260, 312906), (264, 308165), (286, 284460), (312, 260755), (330, 246532), (363, 224120), (390, 208604), (429, 189640), (431, 188760), (440, 184899), (484, 168090), (520, 156453), (572, 142230), (605, 134472), (660, 123266), (715, 113784), (726, 112060), (780, 104302), (858, 94820), (862, 94380), (968, 84045), (1144, 71115), (1210, 67236), (1293, 62920), (1320, 61633), (1430, 56892), (1452, 56030), (1560, 52151), (1573, 51720), (1716, 47410), (1724, 47190), (1815, 44824), (2145, 37928), (2155, 37752), (2420, 33618), (2586, 31460), (2860, 28446), (2904, 28015), (3146, 25860), (3432, 23705), (3448, 23595), (3630, 22412), (4290, 18964), (4310, 18876), (4719, 17240), (4741, 17160), (4840, 16809), (5172, 15730), (5603, 14520), (5720, 14223), (6292, 12930), (6465, 12584), (7260, 11206), (7865, 10344), (8580, 9482), (8620, 9438)]