81195660

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4957}}^1$

素因数の和:4992

約数の個数: 144

約数和(自身を含む): 303191616

約数和(自身を除く): 221995956

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 52, 60, 63, 65, 70, 78, 84, 90, 91, 105, 117, 126, 130, 140, 156, 180, 182, 195, 210, 234, 252, 260, 273, 315, 364, 390, 420, 455, 468, 546, 585, 630, 780, 819, 910, 1092, 1170, 1260, 1365, 1638, 1820, 2340, 2730, 3276, 4095, 4957, 5460, 8190, 9914, 14871, 16380, 19828, 24785, 29742, 34699, 44613, 49570, 59484, 64441, 69398, 74355, 89226, 99140, 104097, 128882, 138796, 148710, 173495, 178452, 193323, 208194, 223065, 257764, 297420, 312291, 322205, 346990, 386646, 416388, 446130, 451087, 520485, 579969, 624582, 644410, 693980, 773292, 892260, 902174, 966615, 1040970, 1159938, 1249164, 1288820, 1353261, 1561455, 1804348, 1933230, 2081940, 2255435, 2319876, 2706522, 2899845, 3122910, 3866460, 4059783, 4510870, 5413044, 5799690, 6245820, 6766305, 8119566, 9021740, 11599380, 13532610, 16239132, 20298915, 27065220, 40597830, 81195660]

約数ペア:

[(1, 81195660), (2, 40597830), (3, 27065220), (4, 20298915), (5, 16239132), (6, 13532610), (7, 11599380), (9, 9021740), (10, 8119566), (12, 6766305), (13, 6245820), (14, 5799690), (15, 5413044), (18, 4510870), (20, 4059783), (21, 3866460), (26, 3122910), (28, 2899845), (30, 2706522), (35, 2319876), (36, 2255435), (39, 2081940), (42, 1933230), (45, 1804348), (52, 1561455), (60, 1353261), (63, 1288820), (65, 1249164), (70, 1159938), (78, 1040970), (84, 966615), (90, 902174), (91, 892260), (105, 773292), (117, 693980), (126, 644410), (130, 624582), (140, 579969), (156, 520485), (180, 451087), (182, 446130), (195, 416388), (210, 386646), (234, 346990), (252, 322205), (260, 312291), (273, 297420), (315, 257764), (364, 223065), (390, 208194), (420, 193323), (455, 178452), (468, 173495), (546, 148710), (585, 138796), (630, 128882), (780, 104097), (819, 99140), (910, 89226), (1092, 74355), (1170, 69398), (1260, 64441), (1365, 59484), (1638, 49570), (1820, 44613), (2340, 34699), (2730, 29742), (3276, 24785), (4095, 19828), (4957, 16380), (5460, 14871), (8190, 9914)]