77909980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^2$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 179725392

約数和(自身を除く): 101815412

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 68, 73, 85, 86, 146, 170, 172, 215, 292, 340, 365, 430, 730, 731, 860, 1241, 1460, 1462, 2482, 2924, 3139, 3655, 4964, 5329, 6205, 6278, 7310, 10658, 12410, 12556, 14620, 15695, 21316, 24820, 26645, 31390, 53290, 53363, 62780, 90593, 106580, 106726, 181186, 213452, 229147, 266815, 362372, 452965, 458294, 533630, 905930, 916588, 1067260, 1145735, 1811860, 2291470, 3895499, 4582940, 7790998, 15581996, 19477495, 38954990, 77909980]

約数ペア:

[(1, 77909980), (2, 38954990), (4, 19477495), (5, 15581996), (10, 7790998), (17, 4582940), (20, 3895499), (34, 2291470), (43, 1811860), (68, 1145735), (73, 1067260), (85, 916588), (86, 905930), (146, 533630), (170, 458294), (172, 452965), (215, 362372), (292, 266815), (340, 229147), (365, 213452), (430, 181186), (730, 106726), (731, 106580), (860, 90593), (1241, 62780), (1460, 53363), (1462, 53290), (2482, 31390), (2924, 26645), (3139, 24820), (3655, 21316), (4964, 15695), (5329, 14620), (6205, 12556), (6278, 12410), (7310, 10658)]