80823560

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{191}}^1$

素因数の和:422

約数の個数: 64

約数和(自身を含む): 186624000

約数和(自身を除く): 105800440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 149, 191, 284, 298, 355, 382, 568, 596, 710, 745, 764, 955, 1192, 1420, 1490, 1528, 1910, 2840, 2980, 3820, 5960, 7640, 10579, 13561, 21158, 27122, 28459, 42316, 52895, 54244, 56918, 67805, 84632, 105790, 108488, 113836, 135610, 142295, 211580, 227672, 271220, 284590, 423160, 542440, 569180, 1138360, 2020589, 4041178, 8082356, 10102945, 16164712, 20205890, 40411780, 80823560]

約数ペア:

[(1, 80823560), (2, 40411780), (4, 20205890), (5, 16164712), (8, 10102945), (10, 8082356), (20, 4041178), (40, 2020589), (71, 1138360), (142, 569180), (149, 542440), (191, 423160), (284, 284590), (298, 271220), (355, 227672), (382, 211580), (568, 142295), (596, 135610), (710, 113836), (745, 108488), (764, 105790), (955, 84632), (1192, 67805), (1420, 56918), (1490, 54244), (1528, 52895), (1910, 42316), (2840, 28459), (2980, 27122), (3820, 21158), (5960, 13561), (7640, 10579)]