81937980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{1367}}^1$

素因数の和:1425

約数の個数: 120

約数和(自身を含む): 264182688

約数和(自身を除く): 182244708

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 37, 45, 54, 60, 74, 81, 90, 108, 111, 135, 148, 162, 180, 185, 222, 270, 324, 333, 370, 405, 444, 540, 555, 666, 740, 810, 999, 1110, 1332, 1367, 1620, 1665, 1998, 2220, 2734, 2997, 3330, 3996, 4101, 4995, 5468, 5994, 6660, 6835, 8202, 9990, 11988, 12303, 13670, 14985, 16404, 19980, 20505, 24606, 27340, 29970, 36909, 41010, 49212, 50579, 59940, 61515, 73818, 82020, 101158, 110727, 123030, 147636, 151737, 184545, 202316, 221454, 246060, 252895, 303474, 369090, 442908, 455211, 505790, 553635, 606948, 738180, 758685, 910422, 1011580, 1107270, 1365633, 1517370, 1820844, 2214540, 2276055, 2731266, 3034740, 4096899, 4552110, 5462532, 6828165, 8193798, 9104220, 13656330, 16387596, 20484495, 27312660, 40968990, 81937980]

約数ペア:

[(1, 81937980), (2, 40968990), (3, 27312660), (4, 20484495), (5, 16387596), (6, 13656330), (9, 9104220), (10, 8193798), (12, 6828165), (15, 5462532), (18, 4552110), (20, 4096899), (27, 3034740), (30, 2731266), (36, 2276055), (37, 2214540), (45, 1820844), (54, 1517370), (60, 1365633), (74, 1107270), (81, 1011580), (90, 910422), (108, 758685), (111, 738180), (135, 606948), (148, 553635), (162, 505790), (180, 455211), (185, 442908), (222, 369090), (270, 303474), (324, 252895), (333, 246060), (370, 221454), (405, 202316), (444, 184545), (540, 151737), (555, 147636), (666, 123030), (740, 110727), (810, 101158), (999, 82020), (1110, 73818), (1332, 61515), (1367, 59940), (1620, 50579), (1665, 49212), (1998, 41010), (2220, 36909), (2734, 29970), (2997, 27340), (3330, 24606), (3996, 20505), (4101, 19980), (4995, 16404), (5468, 14985), (5994, 13670), (6660, 12303), (6835, 11988), (8202, 9990)]