21638883

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{631}}^1$

素因数の和:735

約数の個数: 32

約数和(自身を含む): 34947072

約数和(自身を除く): 13308189

約数列:

[1, 3, 7, 21, 23, 69, 71, 161, 213, 483, 497, 631, 1491, 1633, 1893, 4417, 4899, 11431, 13251, 14513, 34293, 43539, 44801, 101591, 134403, 304773, 313607, 940821, 1030423, 3091269, 7212961, 21638883]

約数ペア:

[(1, 21638883), (3, 7212961), (7, 3091269), (21, 1030423), (23, 940821), (69, 313607), (71, 304773), (161, 134403), (213, 101591), (483, 44801), (497, 43539), (631, 34293), (1491, 14513), (1633, 13251), (1893, 11431), (4417, 4899)]