20983530

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{271}}^1$

素因数の和:399

約数の個数: 64

約数和(自身を含む): 52876800

約数和(自身を除く): 31893270

約数列:

[1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 89, 145, 174, 178, 267, 271, 290, 435, 445, 534, 542, 813, 870, 890, 1335, 1355, 1626, 2581, 2670, 2710, 4065, 5162, 7743, 7859, 8130, 12905, 15486, 15718, 23577, 24119, 25810, 38715, 39295, 47154, 48238, 72357, 77430, 78590, 117885, 120595, 144714, 235770, 241190, 361785, 699451, 723570, 1398902, 2098353, 3497255, 4196706, 6994510, 10491765, 20983530]

約数ペア:

[(1, 20983530), (2, 10491765), (3, 6994510), (5, 4196706), (6, 3497255), (10, 2098353), (15, 1398902), (29, 723570), (30, 699451), (58, 361785), (87, 241190), (89, 235770), (145, 144714), (174, 120595), (178, 117885), (267, 78590), (271, 77430), (290, 72357), (435, 48238), (445, 47154), (534, 39295), (542, 38715), (813, 25810), (870, 24119), (890, 23577), (1335, 15718), (1355, 15486), (1626, 12905), (2581, 8130), (2670, 7859), (2710, 7743), (4065, 5162)]