256943984

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:295

約数の個数: 120

約数和(自身を含む): 597867984

約数和(自身を除く): 340924000

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 37, 44, 68, 74, 88, 121, 136, 148, 176, 187, 211, 242, 272, 296, 374, 407, 422, 484, 592, 629, 748, 814, 844, 968, 1258, 1496, 1628, 1688, 1936, 2057, 2321, 2516, 2992, 3256, 3376, 3587, 4114, 4477, 4642, 5032, 6512, 6919, 7174, 7807, 8228, 8954, 9284, 10064, 13838, 14348, 15614, 16456, 17908, 18568, 25531, 27676, 28696, 31228, 32912, 35816, 37136, 39457, 51062, 55352, 57392, 62456, 71632, 76109, 78914, 85877, 102124, 110704, 124912, 132719, 152218, 157828, 171754, 204248, 265438, 304436, 315656, 343508, 408496, 434027, 530876, 608872, 631312, 687016, 868054, 944647, 1061752, 1217744, 1374032, 1459909, 1736108, 1889294, 2123504, 2919818, 3472216, 3778588, 5839636, 6944432, 7557176, 11679272, 15114352, 16058999, 23358544, 32117998, 64235996, 128471992, 256943984]

約数ペア:

[(1, 256943984), (2, 128471992), (4, 64235996), (8, 32117998), (11, 23358544), (16, 16058999), (17, 15114352), (22, 11679272), (34, 7557176), (37, 6944432), (44, 5839636), (68, 3778588), (74, 3472216), (88, 2919818), (121, 2123504), (136, 1889294), (148, 1736108), (176, 1459909), (187, 1374032), (211, 1217744), (242, 1061752), (272, 944647), (296, 868054), (374, 687016), (407, 631312), (422, 608872), (484, 530876), (592, 434027), (629, 408496), (748, 343508), (814, 315656), (844, 304436), (968, 265438), (1258, 204248), (1496, 171754), (1628, 157828), (1688, 152218), (1936, 132719), (2057, 124912), (2321, 110704), (2516, 102124), (2992, 85877), (3256, 78914), (3376, 76109), (3587, 71632), (4114, 62456), (4477, 57392), (4642, 55352), (5032, 51062), (6512, 39457), (6919, 37136), (7174, 35816), (7807, 32912), (8228, 31228), (8954, 28696), (9284, 27676), (10064, 25531), (13838, 18568), (14348, 17908), (15614, 16456)]