397375360

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20029}}^1$

素因数の和:20079

約数の個数: 64

約数和(自身を含む): 980668800

約数和(自身を除く): 583293440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 9920, 19840, 20029, 40058, 80116, 100145, 160232, 200290, 320464, 400580, 620899, 640928, 801160, 1241798, 1281856, 1602320, 2483596, 2563712, 3104495, 3204640, 4967192, 6208990, 6409280, 9934384, 12417980, 12818560, 19868768, 24835960, 39737536, 49671920, 79475072, 99343840, 198687680, 397375360]

約数ペア:

[(1, 397375360), (2, 198687680), (4, 99343840), (5, 79475072), (8, 49671920), (10, 39737536), (16, 24835960), (20, 19868768), (31, 12818560), (32, 12417980), (40, 9934384), (62, 6409280), (64, 6208990), (80, 4967192), (124, 3204640), (128, 3104495), (155, 2563712), (160, 2483596), (248, 1602320), (310, 1281856), (320, 1241798), (496, 801160), (620, 640928), (640, 620899), (992, 400580), (1240, 320464), (1984, 200290), (2480, 160232), (3968, 100145), (4960, 80116), (9920, 40058), (19840, 20029)]