71621320

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{197}}^1$

素因数の和:418

約数の個数: 64

約数和(自身を含む): 165726000

約数和(自身を除く): 94104680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 149, 197, 244, 298, 305, 394, 488, 596, 610, 745, 788, 985, 1192, 1220, 1490, 1576, 1970, 2440, 2980, 3940, 5960, 7880, 9089, 12017, 18178, 24034, 29353, 36356, 45445, 48068, 58706, 60085, 72712, 90890, 96136, 117412, 120170, 146765, 181780, 234824, 240340, 293530, 363560, 480680, 587060, 1174120, 1790533, 3581066, 7162132, 8952665, 14324264, 17905330, 35810660, 71621320]

約数ペア:

[(1, 71621320), (2, 35810660), (4, 17905330), (5, 14324264), (8, 8952665), (10, 7162132), (20, 3581066), (40, 1790533), (61, 1174120), (122, 587060), (149, 480680), (197, 363560), (244, 293530), (298, 240340), (305, 234824), (394, 181780), (488, 146765), (596, 120170), (610, 117412), (745, 96136), (788, 90890), (985, 72712), (1192, 60085), (1220, 58706), (1490, 48068), (1576, 45445), (1970, 36356), (2440, 29353), (2980, 24034), (3940, 18178), (5960, 12017), (7880, 9089)]