21382790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{787}}^1$

素因数の和:837

約数の個数: 64

約数和(自身を含む): 47658240

約数和(自身を除く): 26275450

約数列:

[1, 2, 5, 10, 11, 13, 19, 22, 26, 38, 55, 65, 95, 110, 130, 143, 190, 209, 247, 286, 418, 494, 715, 787, 1045, 1235, 1430, 1574, 2090, 2470, 2717, 3935, 5434, 7870, 8657, 10231, 13585, 14953, 17314, 20462, 27170, 29906, 43285, 51155, 74765, 86570, 102310, 112541, 149530, 164483, 194389, 225082, 328966, 388778, 562705, 822415, 971945, 1125410, 1644830, 1943890, 2138279, 4276558, 10691395, 21382790]

約数ペア:

[(1, 21382790), (2, 10691395), (5, 4276558), (10, 2138279), (11, 1943890), (13, 1644830), (19, 1125410), (22, 971945), (26, 822415), (38, 562705), (55, 388778), (65, 328966), (95, 225082), (110, 194389), (130, 164483), (143, 149530), (190, 112541), (209, 102310), (247, 86570), (286, 74765), (418, 51155), (494, 43285), (715, 29906), (787, 27170), (1045, 20462), (1235, 17314), (1430, 14953), (1574, 13585), (2090, 10231), (2470, 8657), (2717, 7870), (3935, 5434)]