21374810

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:267

約数の個数: 48

約数和(自身を含む): 42135552

約数和(自身を除く): 20760742

約数列:

[1, 2, 5, 10, 19, 31, 38, 62, 95, 155, 190, 191, 310, 361, 382, 589, 722, 955, 1178, 1805, 1910, 2945, 3610, 3629, 5890, 5921, 7258, 11191, 11842, 18145, 22382, 29605, 36290, 55955, 59210, 68951, 111910, 112499, 137902, 224998, 344755, 562495, 689510, 1124990, 2137481, 4274962, 10687405, 21374810]

約数ペア:

[(1, 21374810), (2, 10687405), (5, 4274962), (10, 2137481), (19, 1124990), (31, 689510), (38, 562495), (62, 344755), (95, 224998), (155, 137902), (190, 112499), (191, 111910), (310, 68951), (361, 59210), (382, 55955), (589, 36290), (722, 29605), (955, 22382), (1178, 18145), (1805, 11842), (1910, 11191), (2945, 7258), (3610, 5921), (3629, 5890)]