20621340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{293}}^1$

素因数の和:348

約数の個数: 144

約数和(自身を含む): 69346368

約数和(自身を除く): 48725028

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 23, 30, 34, 36, 45, 46, 51, 60, 68, 69, 85, 90, 92, 102, 115, 138, 153, 170, 180, 204, 207, 230, 255, 276, 293, 306, 340, 345, 391, 414, 460, 510, 586, 612, 690, 765, 782, 828, 879, 1020, 1035, 1172, 1173, 1380, 1465, 1530, 1564, 1758, 1955, 2070, 2346, 2637, 2930, 3060, 3516, 3519, 3910, 4140, 4395, 4692, 4981, 5274, 5860, 5865, 6739, 7038, 7820, 8790, 9962, 10548, 11730, 13185, 13478, 14076, 14943, 17580, 17595, 19924, 20217, 23460, 24905, 26370, 26956, 29886, 33695, 35190, 40434, 44829, 49810, 52740, 59772, 60651, 67390, 70380, 74715, 80868, 89658, 99620, 101085, 114563, 121302, 134780, 149430, 179316, 202170, 224145, 229126, 242604, 298860, 303255, 343689, 404340, 448290, 458252, 572815, 606510, 687378, 896580, 1031067, 1145630, 1213020, 1374756, 1718445, 2062134, 2291260, 3436890, 4124268, 5155335, 6873780, 10310670, 20621340]

約数ペア:

[(1, 20621340), (2, 10310670), (3, 6873780), (4, 5155335), (5, 4124268), (6, 3436890), (9, 2291260), (10, 2062134), (12, 1718445), (15, 1374756), (17, 1213020), (18, 1145630), (20, 1031067), (23, 896580), (30, 687378), (34, 606510), (36, 572815), (45, 458252), (46, 448290), (51, 404340), (60, 343689), (68, 303255), (69, 298860), (85, 242604), (90, 229126), (92, 224145), (102, 202170), (115, 179316), (138, 149430), (153, 134780), (170, 121302), (180, 114563), (204, 101085), (207, 99620), (230, 89658), (255, 80868), (276, 74715), (293, 70380), (306, 67390), (340, 60651), (345, 59772), (391, 52740), (414, 49810), (460, 44829), (510, 40434), (586, 35190), (612, 33695), (690, 29886), (765, 26956), (782, 26370), (828, 24905), (879, 23460), (1020, 20217), (1035, 19924), (1172, 17595), (1173, 17580), (1380, 14943), (1465, 14076), (1530, 13478), (1564, 13185), (1758, 11730), (1955, 10548), (2070, 9962), (2346, 8790), (2637, 7820), (2930, 7038), (3060, 6739), (3516, 5865), (3519, 5860), (3910, 5274), (4140, 4981), (4395, 4692)]