256702425

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{3037}}^1$

素因数の和:3087

約数の個数: 72

約数和(自身を含む): 515342016

約数和(自身を除く): 258639591

約数列:

[1, 3, 5, 7, 15, 21, 23, 25, 35, 49, 69, 75, 105, 115, 147, 161, 175, 245, 345, 483, 525, 575, 735, 805, 1127, 1225, 1725, 2415, 3037, 3381, 3675, 4025, 5635, 9111, 12075, 15185, 16905, 21259, 28175, 45555, 63777, 69851, 75925, 84525, 106295, 148813, 209553, 227775, 318885, 349255, 446439, 488957, 531475, 744065, 1047765, 1466871, 1594425, 1746275, 2232195, 2444785, 3422699, 3720325, 5238825, 7334355, 10268097, 11160975, 12223925, 17113495, 36671775, 51340485, 85567475, 256702425]

約数ペア:

[(1, 256702425), (3, 85567475), (5, 51340485), (7, 36671775), (15, 17113495), (21, 12223925), (23, 11160975), (25, 10268097), (35, 7334355), (49, 5238825), (69, 3720325), (75, 3422699), (105, 2444785), (115, 2232195), (147, 1746275), (161, 1594425), (175, 1466871), (245, 1047765), (345, 744065), (483, 531475), (525, 488957), (575, 446439), (735, 349255), (805, 318885), (1127, 227775), (1225, 209553), (1725, 148813), (2415, 106295), (3037, 84525), (3381, 75925), (3675, 69851), (4025, 63777), (5635, 45555), (9111, 28175), (12075, 21259), (15185, 16905)]