90147980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{149}}^1\times {\mathrm{179}}^1$

素因数の和:363

約数の個数: 72

約数和(自身を含む): 207522000

約数和(自身を除く): 117374020

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 149, 169, 179, 260, 298, 338, 358, 596, 676, 716, 745, 845, 895, 1490, 1690, 1790, 1937, 2327, 2980, 3380, 3580, 3874, 4654, 7748, 9308, 9685, 11635, 19370, 23270, 25181, 26671, 30251, 38740, 46540, 50362, 53342, 60502, 100724, 106684, 121004, 125905, 133355, 151255, 251810, 266710, 302510, 346723, 503620, 533420, 605020, 693446, 1386892, 1733615, 3467230, 4507399, 6934460, 9014798, 18029596, 22536995, 45073990, 90147980]

約数ペア:

[(1, 90147980), (2, 45073990), (4, 22536995), (5, 18029596), (10, 9014798), (13, 6934460), (20, 4507399), (26, 3467230), (52, 1733615), (65, 1386892), (130, 693446), (149, 605020), (169, 533420), (179, 503620), (260, 346723), (298, 302510), (338, 266710), (358, 251810), (596, 151255), (676, 133355), (716, 125905), (745, 121004), (845, 106684), (895, 100724), (1490, 60502), (1690, 53342), (1790, 50362), (1937, 46540), (2327, 38740), (2980, 30251), (3380, 26671), (3580, 25181), (3874, 23270), (4654, 19370), (7748, 11635), (9308, 9685)]