18697380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23971}}^1$

素因数の和:23996

約数の個数: 48

約数和(自身を含む): 56382144

約数和(自身を除く): 37684764

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 23971, 47942, 71913, 95884, 119855, 143826, 239710, 287652, 311623, 359565, 479420, 623246, 719130, 934869, 1246492, 1438260, 1558115, 1869738, 3116230, 3739476, 4674345, 6232460, 9348690, 18697380]

約数ペア:

[(1, 18697380), (2, 9348690), (3, 6232460), (4, 4674345), (5, 3739476), (6, 3116230), (10, 1869738), (12, 1558115), (13, 1438260), (15, 1246492), (20, 934869), (26, 719130), (30, 623246), (39, 479420), (52, 359565), (60, 311623), (65, 287652), (78, 239710), (130, 143826), (156, 119855), (195, 95884), (260, 71913), (390, 47942), (780, 23971)]