81451980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{367}}^1$

素因数の和:525

約数の個数: 120

約数和(自身を含む): 258084288

約数和(自身を除く): 176632308

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 137, 162, 180, 270, 274, 324, 367, 405, 411, 540, 548, 685, 734, 810, 822, 1101, 1233, 1370, 1468, 1620, 1644, 1835, 2055, 2202, 2466, 2740, 3303, 3670, 3699, 4110, 4404, 4932, 5505, 6165, 6606, 7340, 7398, 8220, 9909, 11010, 11097, 12330, 13212, 14796, 16515, 18495, 19818, 22020, 22194, 24660, 29727, 33030, 36990, 39636, 44388, 49545, 50279, 55485, 59454, 66060, 73980, 99090, 100558, 110970, 118908, 148635, 150837, 198180, 201116, 221940, 251395, 297270, 301674, 452511, 502790, 594540, 603348, 754185, 905022, 1005580, 1357533, 1508370, 1810044, 2262555, 2715066, 3016740, 4072599, 4525110, 5430132, 6787665, 8145198, 9050220, 13575330, 16290396, 20362995, 27150660, 40725990, 81451980]

約数ペア:

[(1, 81451980), (2, 40725990), (3, 27150660), (4, 20362995), (5, 16290396), (6, 13575330), (9, 9050220), (10, 8145198), (12, 6787665), (15, 5430132), (18, 4525110), (20, 4072599), (27, 3016740), (30, 2715066), (36, 2262555), (45, 1810044), (54, 1508370), (60, 1357533), (81, 1005580), (90, 905022), (108, 754185), (135, 603348), (137, 594540), (162, 502790), (180, 452511), (270, 301674), (274, 297270), (324, 251395), (367, 221940), (405, 201116), (411, 198180), (540, 150837), (548, 148635), (685, 118908), (734, 110970), (810, 100558), (822, 99090), (1101, 73980), (1233, 66060), (1370, 59454), (1468, 55485), (1620, 50279), (1644, 49545), (1835, 44388), (2055, 39636), (2202, 36990), (2466, 33030), (2740, 29727), (3303, 24660), (3670, 22194), (3699, 22020), (4110, 19818), (4404, 18495), (4932, 16515), (5505, 14796), (6165, 13212), (6606, 12330), (7340, 11097), (7398, 11010), (8220, 9909)]