28969980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2857}}^1$

素因数の和:2895

約数の個数: 72

約数和(自身を含む): 87866352

約数和(自身を除く): 58896372

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 169, 195, 260, 338, 390, 507, 676, 780, 845, 1014, 1690, 2028, 2535, 2857, 3380, 5070, 5714, 8571, 10140, 11428, 14285, 17142, 28570, 34284, 37141, 42855, 57140, 74282, 85710, 111423, 148564, 171420, 185705, 222846, 371410, 445692, 482833, 557115, 742820, 965666, 1114230, 1448499, 1931332, 2228460, 2414165, 2896998, 4828330, 5793996, 7242495, 9656660, 14484990, 28969980]

約数ペア:

[(1, 28969980), (2, 14484990), (3, 9656660), (4, 7242495), (5, 5793996), (6, 4828330), (10, 2896998), (12, 2414165), (13, 2228460), (15, 1931332), (20, 1448499), (26, 1114230), (30, 965666), (39, 742820), (52, 557115), (60, 482833), (65, 445692), (78, 371410), (130, 222846), (156, 185705), (169, 171420), (195, 148564), (260, 111423), (338, 85710), (390, 74282), (507, 57140), (676, 42855), (780, 37141), (845, 34284), (1014, 28570), (1690, 17142), (2028, 14285), (2535, 11428), (2857, 10140), (3380, 8571), (5070, 5714)]