18754995

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1$

素因数の和:137

約数の個数: 96

約数和(自身を含む): 39398400

約数和(自身を除く): 20643405

約数列:

[1, 3, 5, 7, 15, 17, 19, 21, 35, 49, 51, 57, 79, 85, 95, 105, 119, 133, 147, 237, 245, 255, 285, 323, 357, 395, 399, 553, 595, 665, 735, 833, 931, 969, 1185, 1343, 1501, 1615, 1659, 1785, 1995, 2261, 2499, 2765, 2793, 3871, 4029, 4165, 4503, 4655, 4845, 6715, 6783, 7505, 8295, 9401, 10507, 11305, 11613, 12495, 13965, 15827, 19355, 20145, 22515, 25517, 28203, 31521, 33915, 47005, 47481, 52535, 58065, 65807, 73549, 76551, 79135, 127585, 141015, 157605, 178619, 197421, 220647, 237405, 329035, 367745, 382755, 535857, 893095, 987105, 1103235, 1250333, 2679285, 3750999, 6251665, 18754995]

約数ペア:

[(1, 18754995), (3, 6251665), (5, 3750999), (7, 2679285), (15, 1250333), (17, 1103235), (19, 987105), (21, 893095), (35, 535857), (49, 382755), (51, 367745), (57, 329035), (79, 237405), (85, 220647), (95, 197421), (105, 178619), (119, 157605), (133, 141015), (147, 127585), (237, 79135), (245, 76551), (255, 73549), (285, 65807), (323, 58065), (357, 52535), (395, 47481), (399, 47005), (553, 33915), (595, 31521), (665, 28203), (735, 25517), (833, 22515), (931, 20145), (969, 19355), (1185, 15827), (1343, 13965), (1501, 12495), (1615, 11613), (1659, 11305), (1785, 10507), (1995, 9401), (2261, 8295), (2499, 7505), (2765, 6783), (2793, 6715), (3871, 4845), (4029, 4655), (4165, 4503)]