18947655

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:205

約数の個数: 64

約数和(自身を含む): 36288000

約数和(自身を除く): 17340345

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 83, 89, 95, 135, 171, 249, 267, 285, 415, 445, 513, 747, 801, 855, 1245, 1335, 1577, 1691, 2241, 2403, 2565, 3735, 4005, 4731, 5073, 7387, 7885, 8455, 11205, 12015, 14193, 15219, 22161, 23655, 25365, 36935, 42579, 45657, 66483, 70965, 76095, 110805, 140353, 199449, 212895, 228285, 332415, 421059, 701765, 997245, 1263177, 2105295, 3789531, 6315885, 18947655]

約数ペア:

[(1, 18947655), (3, 6315885), (5, 3789531), (9, 2105295), (15, 1263177), (19, 997245), (27, 701765), (45, 421059), (57, 332415), (83, 228285), (89, 212895), (95, 199449), (135, 140353), (171, 110805), (249, 76095), (267, 70965), (285, 66483), (415, 45657), (445, 42579), (513, 36935), (747, 25365), (801, 23655), (855, 22161), (1245, 15219), (1335, 14193), (1577, 12015), (1691, 11205), (2241, 8455), (2403, 7885), (2565, 7387), (3735, 5073), (4005, 4731)]