21529160

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^2\times {\mathrm{101}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 49599540

約数和(自身を除く): 28070380

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 101, 146, 202, 292, 365, 404, 505, 584, 730, 808, 1010, 1460, 2020, 2920, 4040, 5329, 7373, 10658, 14746, 21316, 26645, 29492, 36865, 42632, 53290, 58984, 73730, 106580, 147460, 213160, 294920, 538229, 1076458, 2152916, 2691145, 4305832, 5382290, 10764580, 21529160]

約数ペア:

[(1, 21529160), (2, 10764580), (4, 5382290), (5, 4305832), (8, 2691145), (10, 2152916), (20, 1076458), (40, 538229), (73, 294920), (101, 213160), (146, 147460), (202, 106580), (292, 73730), (365, 58984), (404, 53290), (505, 42632), (584, 36865), (730, 29492), (808, 26645), (1010, 21316), (1460, 14746), (2020, 10658), (2920, 7373), (4040, 5329)]