399088940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{22147}}^1$

素因数の和:22226

約数の個数: 48

約数和(自身を含む): 904169952

約数和(自身を除く): 505081012

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 53, 68, 85, 106, 170, 212, 265, 340, 530, 901, 1060, 1802, 3604, 4505, 9010, 18020, 22147, 44294, 88588, 110735, 221470, 376499, 442940, 752998, 1173791, 1505996, 1882495, 2347582, 3764990, 4695164, 5868955, 7529980, 11737910, 19954447, 23475820, 39908894, 79817788, 99772235, 199544470, 399088940]

約数ペア:

[(1, 399088940), (2, 199544470), (4, 99772235), (5, 79817788), (10, 39908894), (17, 23475820), (20, 19954447), (34, 11737910), (53, 7529980), (68, 5868955), (85, 4695164), (106, 3764990), (170, 2347582), (212, 1882495), (265, 1505996), (340, 1173791), (530, 752998), (901, 442940), (1060, 376499), (1802, 221470), (3604, 110735), (4505, 88588), (9010, 44294), (18020, 22147)]