71731960

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1\times {\mathrm{229}}^1$

素因数の和:472

約数の個数: 64

約数和(自身を含む): 166924800

約数和(自身を除く): 95192840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 191, 205, 229, 328, 382, 410, 458, 764, 820, 916, 955, 1145, 1528, 1640, 1832, 1910, 2290, 3820, 4580, 7640, 7831, 9160, 9389, 15662, 18778, 31324, 37556, 39155, 43739, 46945, 62648, 75112, 78310, 87478, 93890, 156620, 174956, 187780, 218695, 313240, 349912, 375560, 437390, 874780, 1749560, 1793299, 3586598, 7173196, 8966495, 14346392, 17932990, 35865980, 71731960]

約数ペア:

[(1, 71731960), (2, 35865980), (4, 17932990), (5, 14346392), (8, 8966495), (10, 7173196), (20, 3586598), (40, 1793299), (41, 1749560), (82, 874780), (164, 437390), (191, 375560), (205, 349912), (229, 313240), (328, 218695), (382, 187780), (410, 174956), (458, 156620), (764, 93890), (820, 87478), (916, 78310), (955, 75112), (1145, 62648), (1528, 46945), (1640, 43739), (1832, 39155), (1910, 37556), (2290, 31324), (3820, 18778), (4580, 15662), (7640, 9389), (7831, 9160)]