81446820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2131}}^1$

素因数の和:2170

約数の個数: 144

約数和(自身を含む): 285824448

約数和(自身を除く): 204377628

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 49, 52, 60, 65, 70, 78, 84, 91, 98, 105, 130, 140, 147, 156, 182, 195, 196, 210, 245, 260, 273, 294, 364, 390, 420, 455, 490, 546, 588, 637, 735, 780, 910, 980, 1092, 1274, 1365, 1470, 1820, 1911, 2131, 2548, 2730, 2940, 3185, 3822, 4262, 5460, 6370, 6393, 7644, 8524, 9555, 10655, 12740, 12786, 14917, 19110, 21310, 25572, 27703, 29834, 31965, 38220, 42620, 44751, 55406, 59668, 63930, 74585, 83109, 89502, 104419, 110812, 127860, 138515, 149170, 166218, 179004, 193921, 208838, 223755, 277030, 298340, 313257, 332436, 387842, 415545, 417676, 447510, 522095, 554060, 581763, 626514, 775684, 831090, 895020, 969605, 1044190, 1163526, 1253028, 1357447, 1566285, 1662180, 1939210, 2088380, 2327052, 2714894, 2908815, 3132570, 3878420, 4072341, 5429788, 5817630, 6265140, 6787235, 8144682, 11635260, 13574470, 16289364, 20361705, 27148940, 40723410, 81446820]

約数ペア:

[(1, 81446820), (2, 40723410), (3, 27148940), (4, 20361705), (5, 16289364), (6, 13574470), (7, 11635260), (10, 8144682), (12, 6787235), (13, 6265140), (14, 5817630), (15, 5429788), (20, 4072341), (21, 3878420), (26, 3132570), (28, 2908815), (30, 2714894), (35, 2327052), (39, 2088380), (42, 1939210), (49, 1662180), (52, 1566285), (60, 1357447), (65, 1253028), (70, 1163526), (78, 1044190), (84, 969605), (91, 895020), (98, 831090), (105, 775684), (130, 626514), (140, 581763), (147, 554060), (156, 522095), (182, 447510), (195, 417676), (196, 415545), (210, 387842), (245, 332436), (260, 313257), (273, 298340), (294, 277030), (364, 223755), (390, 208838), (420, 193921), (455, 179004), (490, 166218), (546, 149170), (588, 138515), (637, 127860), (735, 110812), (780, 104419), (910, 89502), (980, 83109), (1092, 74585), (1274, 63930), (1365, 59668), (1470, 55406), (1820, 44751), (1911, 42620), (2131, 38220), (2548, 31965), (2730, 29834), (2940, 27703), (3185, 25572), (3822, 21310), (4262, 19110), (5460, 14917), (6370, 12786), (6393, 12740), (7644, 10655), (8524, 9555)]