19951020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{409}}^1$

素因数の和:695

約数の個数: 72

約数和(自身を含む): 60889920

約数和(自身を除く): 40938900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 271, 409, 542, 813, 818, 1084, 1227, 1355, 1626, 1636, 2045, 2439, 2454, 2710, 3252, 3681, 4065, 4090, 4878, 4908, 5420, 6135, 7362, 8130, 8180, 9756, 12195, 12270, 14724, 16260, 18405, 24390, 24540, 36810, 48780, 73620, 110839, 221678, 332517, 443356, 554195, 665034, 997551, 1108390, 1330068, 1662585, 1995102, 2216780, 3325170, 3990204, 4987755, 6650340, 9975510, 19951020]

約数ペア:

[(1, 19951020), (2, 9975510), (3, 6650340), (4, 4987755), (5, 3990204), (6, 3325170), (9, 2216780), (10, 1995102), (12, 1662585), (15, 1330068), (18, 1108390), (20, 997551), (30, 665034), (36, 554195), (45, 443356), (60, 332517), (90, 221678), (180, 110839), (271, 73620), (409, 48780), (542, 36810), (813, 24540), (818, 24390), (1084, 18405), (1227, 16260), (1355, 14724), (1626, 12270), (1636, 12195), (2045, 9756), (2439, 8180), (2454, 8130), (2710, 7362), (3252, 6135), (3681, 5420), (4065, 4908), (4090, 4878)]