279407960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{17333}}^1$

素因数の和:17388

約数の個数: 64

約数和(自身を含む): 698906880

約数和(自身を除く): 419498920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1612, 2015, 3224, 4030, 8060, 16120, 17333, 34666, 69332, 86665, 138664, 173330, 225329, 346660, 450658, 537323, 693320, 901316, 1074646, 1126645, 1802632, 2149292, 2253290, 2686615, 4298584, 4506580, 5373230, 6985199, 9013160, 10746460, 13970398, 21492920, 27940796, 34925995, 55881592, 69851990, 139703980, 279407960]

約数ペア:

[(1, 279407960), (2, 139703980), (4, 69851990), (5, 55881592), (8, 34925995), (10, 27940796), (13, 21492920), (20, 13970398), (26, 10746460), (31, 9013160), (40, 6985199), (52, 5373230), (62, 4506580), (65, 4298584), (104, 2686615), (124, 2253290), (130, 2149292), (155, 1802632), (248, 1126645), (260, 1074646), (310, 901316), (403, 693320), (520, 537323), (620, 450658), (806, 346660), (1240, 225329), (1612, 173330), (2015, 138664), (3224, 86665), (4030, 69332), (8060, 34666), (16120, 17333)]