81456760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{499}}^1$

素因数の和:581

約数の個数: 128

約数和(自身を含む): 233280000

約数和(自身を除く): 151823240

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 53, 55, 56, 70, 77, 88, 106, 110, 140, 154, 212, 220, 265, 280, 308, 371, 385, 424, 440, 499, 530, 583, 616, 742, 770, 998, 1060, 1166, 1484, 1540, 1855, 1996, 2120, 2332, 2495, 2915, 2968, 3080, 3493, 3710, 3992, 4081, 4664, 4990, 5489, 5830, 6986, 7420, 8162, 9980, 10978, 11660, 13972, 14840, 16324, 17465, 19960, 20405, 21956, 23320, 26447, 27445, 27944, 32648, 34930, 38423, 40810, 43912, 52894, 54890, 69860, 76846, 81620, 105788, 109780, 132235, 139720, 153692, 163240, 185129, 192115, 211576, 219560, 264470, 290917, 307384, 370258, 384230, 528940, 581834, 740516, 768460, 925645, 1057880, 1163668, 1454585, 1481032, 1536920, 1851290, 2036419, 2327336, 2909170, 3702580, 4072838, 5818340, 7405160, 8145676, 10182095, 11636680, 16291352, 20364190, 40728380, 81456760]

約数ペア:

[(1, 81456760), (2, 40728380), (4, 20364190), (5, 16291352), (7, 11636680), (8, 10182095), (10, 8145676), (11, 7405160), (14, 5818340), (20, 4072838), (22, 3702580), (28, 2909170), (35, 2327336), (40, 2036419), (44, 1851290), (53, 1536920), (55, 1481032), (56, 1454585), (70, 1163668), (77, 1057880), (88, 925645), (106, 768460), (110, 740516), (140, 581834), (154, 528940), (212, 384230), (220, 370258), (265, 307384), (280, 290917), (308, 264470), (371, 219560), (385, 211576), (424, 192115), (440, 185129), (499, 163240), (530, 153692), (583, 139720), (616, 132235), (742, 109780), (770, 105788), (998, 81620), (1060, 76846), (1166, 69860), (1484, 54890), (1540, 52894), (1855, 43912), (1996, 40810), (2120, 38423), (2332, 34930), (2495, 32648), (2915, 27944), (2968, 27445), (3080, 26447), (3493, 23320), (3710, 21956), (3992, 20405), (4081, 19960), (4664, 17465), (4990, 16324), (5489, 14840), (5830, 13972), (6986, 11660), (7420, 10978), (8162, 9980)]