81471780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{941}}^1$

素因数の和:1006

約数の個数: 144

約数和(自身を含む): 273624624

約数和(自身を除く): 192152844

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 37, 39, 45, 52, 60, 65, 74, 78, 90, 111, 117, 130, 148, 156, 180, 185, 195, 222, 234, 260, 333, 370, 390, 444, 468, 481, 555, 585, 666, 740, 780, 941, 962, 1110, 1170, 1332, 1443, 1665, 1882, 1924, 2220, 2340, 2405, 2823, 2886, 3330, 3764, 4329, 4705, 4810, 5646, 5772, 6660, 7215, 8469, 8658, 9410, 9620, 11292, 12233, 14115, 14430, 16938, 17316, 18820, 21645, 24466, 28230, 28860, 33876, 34817, 36699, 42345, 43290, 48932, 56460, 61165, 69634, 73398, 84690, 86580, 104451, 110097, 122330, 139268, 146796, 169380, 174085, 183495, 208902, 220194, 244660, 313353, 348170, 366990, 417804, 440388, 452621, 522255, 550485, 626706, 696340, 733980, 905242, 1044510, 1100970, 1253412, 1357863, 1566765, 1810484, 2089020, 2201940, 2263105, 2715726, 3133530, 4073589, 4526210, 5431452, 6267060, 6789315, 8147178, 9052420, 13578630, 16294356, 20367945, 27157260, 40735890, 81471780]

約数ペア:

[(1, 81471780), (2, 40735890), (3, 27157260), (4, 20367945), (5, 16294356), (6, 13578630), (9, 9052420), (10, 8147178), (12, 6789315), (13, 6267060), (15, 5431452), (18, 4526210), (20, 4073589), (26, 3133530), (30, 2715726), (36, 2263105), (37, 2201940), (39, 2089020), (45, 1810484), (52, 1566765), (60, 1357863), (65, 1253412), (74, 1100970), (78, 1044510), (90, 905242), (111, 733980), (117, 696340), (130, 626706), (148, 550485), (156, 522255), (180, 452621), (185, 440388), (195, 417804), (222, 366990), (234, 348170), (260, 313353), (333, 244660), (370, 220194), (390, 208902), (444, 183495), (468, 174085), (481, 169380), (555, 146796), (585, 139268), (666, 122330), (740, 110097), (780, 104451), (941, 86580), (962, 84690), (1110, 73398), (1170, 69634), (1332, 61165), (1443, 56460), (1665, 48932), (1882, 43290), (1924, 42345), (2220, 36699), (2340, 34817), (2405, 33876), (2823, 28860), (2886, 28230), (3330, 24466), (3764, 21645), (4329, 18820), (4705, 17316), (4810, 16938), (5646, 14430), (5772, 14115), (6660, 12233), (7215, 11292), (8469, 9620), (8658, 9410)]