81581880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:293

約数の個数: 128

約数和(自身を含む): 253612800

約数和(自身を除く): 172030920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 67, 73, 120, 134, 139, 146, 201, 219, 268, 278, 292, 335, 365, 402, 417, 438, 536, 556, 584, 670, 695, 730, 804, 834, 876, 1005, 1095, 1112, 1340, 1390, 1460, 1608, 1668, 1752, 2010, 2085, 2190, 2680, 2780, 2920, 3336, 4020, 4170, 4380, 4891, 5560, 8040, 8340, 8760, 9313, 9782, 10147, 14673, 16680, 18626, 19564, 20294, 24455, 27939, 29346, 30441, 37252, 39128, 40588, 46565, 48910, 50735, 55878, 58692, 60882, 73365, 74504, 81176, 93130, 97820, 101470, 111756, 117384, 121764, 139695, 146730, 152205, 186260, 195640, 202940, 223512, 243528, 279390, 293460, 304410, 372520, 405880, 558780, 586920, 608820, 679849, 1117560, 1217640, 1359698, 2039547, 2719396, 3399245, 4079094, 5438792, 6798490, 8158188, 10197735, 13596980, 16316376, 20395470, 27193960, 40790940, 81581880]

約数ペア:

[(1, 81581880), (2, 40790940), (3, 27193960), (4, 20395470), (5, 16316376), (6, 13596980), (8, 10197735), (10, 8158188), (12, 6798490), (15, 5438792), (20, 4079094), (24, 3399245), (30, 2719396), (40, 2039547), (60, 1359698), (67, 1217640), (73, 1117560), (120, 679849), (134, 608820), (139, 586920), (146, 558780), (201, 405880), (219, 372520), (268, 304410), (278, 293460), (292, 279390), (335, 243528), (365, 223512), (402, 202940), (417, 195640), (438, 186260), (536, 152205), (556, 146730), (584, 139695), (670, 121764), (695, 117384), (730, 111756), (804, 101470), (834, 97820), (876, 93130), (1005, 81176), (1095, 74504), (1112, 73365), (1340, 60882), (1390, 58692), (1460, 55878), (1608, 50735), (1668, 48910), (1752, 46565), (2010, 40588), (2085, 39128), (2190, 37252), (2680, 30441), (2780, 29346), (2920, 27939), (3336, 24455), (4020, 20294), (4170, 19564), (4380, 18626), (4891, 16680), (5560, 14673), (8040, 10147), (8340, 9782), (8760, 9313)]