28404220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{1021}}^1$

素因数の和:1150

約数の個数: 48

約数和(自身を含む): 64901088

約数和(自身を除く): 36496868

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 107, 130, 214, 260, 428, 535, 1021, 1070, 1391, 2042, 2140, 2782, 4084, 5105, 5564, 6955, 10210, 13273, 13910, 20420, 26546, 27820, 53092, 66365, 109247, 132730, 218494, 265460, 436988, 546235, 1092470, 1420211, 2184940, 2840422, 5680844, 7101055, 14202110, 28404220]

約数ペア:

[(1, 28404220), (2, 14202110), (4, 7101055), (5, 5680844), (10, 2840422), (13, 2184940), (20, 1420211), (26, 1092470), (52, 546235), (65, 436988), (107, 265460), (130, 218494), (214, 132730), (260, 109247), (428, 66365), (535, 53092), (1021, 27820), (1070, 26546), (1391, 20420), (2042, 13910), (2140, 13273), (2782, 10210), (4084, 6955), (5105, 5564)]