21621145

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:146

約数の個数: 64

約数和(自身を含む): 34997760

約数和(自身を除く): 13376615

約数列:

[1, 5, 7, 13, 19, 35, 41, 61, 65, 91, 95, 133, 205, 247, 287, 305, 427, 455, 533, 665, 779, 793, 1159, 1235, 1435, 1729, 2135, 2501, 2665, 3731, 3895, 3965, 5453, 5551, 5795, 8113, 8645, 10127, 12505, 15067, 17507, 18655, 27265, 27755, 32513, 40565, 47519, 50635, 70889, 75335, 87535, 105469, 162565, 227591, 237595, 332633, 354445, 527345, 617747, 1137955, 1663165, 3088735, 4324229, 21621145]

約数ペア:

[(1, 21621145), (5, 4324229), (7, 3088735), (13, 1663165), (19, 1137955), (35, 617747), (41, 527345), (61, 354445), (65, 332633), (91, 237595), (95, 227591), (133, 162565), (205, 105469), (247, 87535), (287, 75335), (305, 70889), (427, 50635), (455, 47519), (533, 40565), (665, 32513), (779, 27755), (793, 27265), (1159, 18655), (1235, 17507), (1435, 15067), (1729, 12505), (2135, 10127), (2501, 8645), (2665, 8113), (3731, 5795), (3895, 5551), (3965, 5453)]