261990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:125

約数の個数: 48

約数和(自身を含む): 707616

約数和(自身を除く): 445626

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 41, 45, 71, 82, 90, 123, 142, 205, 213, 246, 355, 369, 410, 426, 615, 639, 710, 738, 1065, 1230, 1278, 1845, 2130, 2911, 3195, 3690, 5822, 6390, 8733, 14555, 17466, 26199, 29110, 43665, 52398, 87330, 130995, 261990]

約数ペア:

[(1, 261990), (2, 130995), (3, 87330), (5, 52398), (6, 43665), (9, 29110), (10, 26199), (15, 17466), (18, 14555), (30, 8733), (41, 6390), (45, 5822), (71, 3690), (82, 3195), (90, 2911), (123, 2130), (142, 1845), (205, 1278), (213, 1230), (246, 1065), (355, 738), (369, 710), (410, 639), (426, 615)]