61998140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{277}}^1$

素因数の和:355

約数の個数: 72

約数和(自身を含む): 142353792

約数和(自身を除く): 80355652

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 277, 310, 361, 380, 554, 589, 620, 722, 1108, 1178, 1385, 1444, 1805, 2356, 2770, 2945, 3610, 5263, 5540, 5890, 7220, 8587, 10526, 11191, 11780, 17174, 21052, 22382, 26315, 34348, 42935, 44764, 52630, 55955, 85870, 99997, 105260, 111910, 163153, 171740, 199994, 223820, 326306, 399988, 499985, 652612, 815765, 999970, 1631530, 1999940, 3099907, 3263060, 6199814, 12399628, 15499535, 30999070, 61998140]

約数ペア:

[(1, 61998140), (2, 30999070), (4, 15499535), (5, 12399628), (10, 6199814), (19, 3263060), (20, 3099907), (31, 1999940), (38, 1631530), (62, 999970), (76, 815765), (95, 652612), (124, 499985), (155, 399988), (190, 326306), (277, 223820), (310, 199994), (361, 171740), (380, 163153), (554, 111910), (589, 105260), (620, 99997), (722, 85870), (1108, 55955), (1178, 52630), (1385, 44764), (1444, 42935), (1805, 34348), (2356, 26315), (2770, 22382), (2945, 21052), (3610, 17174), (5263, 11780), (5540, 11191), (5890, 10526), (7220, 8587)]