406541440

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^2\times {\mathrm{661}}^1$

素因数の和:742

約数の個数: 96

約数和(自身を含む): 1005769980

約数和(自身を除く): 599228540

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, 661, 961, 992, 1240, 1322, 1922, 1984, 2480, 2644, 3305, 3844, 3968, 4805, 4960, 5288, 6610, 7688, 9610, 9920, 10576, 13220, 15376, 19220, 19840, 20491, 21152, 26440, 30752, 38440, 40982, 42304, 52880, 61504, 76880, 81964, 84608, 102455, 105760, 123008, 153760, 163928, 204910, 211520, 307520, 327856, 409820, 423040, 615040, 635221, 655712, 819640, 1270442, 1311424, 1639280, 2540884, 2622848, 3176105, 3278560, 5081768, 6352210, 6557120, 10163536, 12704420, 13114240, 20327072, 25408840, 40654144, 50817680, 81308288, 101635360, 203270720, 406541440]

約数ペア:

[(1, 406541440), (2, 203270720), (4, 101635360), (5, 81308288), (8, 50817680), (10, 40654144), (16, 25408840), (20, 20327072), (31, 13114240), (32, 12704420), (40, 10163536), (62, 6557120), (64, 6352210), (80, 5081768), (124, 3278560), (128, 3176105), (155, 2622848), (160, 2540884), (248, 1639280), (310, 1311424), (320, 1270442), (496, 819640), (620, 655712), (640, 635221), (661, 615040), (961, 423040), (992, 409820), (1240, 327856), (1322, 307520), (1922, 211520), (1984, 204910), (2480, 163928), (2644, 153760), (3305, 123008), (3844, 105760), (3968, 102455), (4805, 84608), (4960, 81964), (5288, 76880), (6610, 61504), (7688, 52880), (9610, 42304), (9920, 40982), (10576, 38440), (13220, 30752), (15376, 26440), (19220, 21152), (19840, 20491)]