399567796

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{41}}^1\times {\mathrm{397}}^1$

素因数の和:497

約数の個数: 72

約数和(自身を含む): 802468296

約数和(自身を除く): 402900500

約数列:

[1, 2, 4, 17, 19, 34, 38, 41, 68, 76, 82, 164, 323, 361, 397, 646, 697, 722, 779, 794, 1292, 1394, 1444, 1558, 1588, 2788, 3116, 6137, 6749, 7543, 12274, 13243, 13498, 14801, 15086, 16277, 24548, 26486, 26996, 29602, 30172, 32554, 52972, 59204, 65108, 128231, 143317, 251617, 256462, 276709, 286634, 309263, 503234, 512924, 553418, 573268, 618526, 1006468, 1106836, 1237052, 2436389, 4872778, 5257471, 5875997, 9745556, 10514942, 11751994, 21029884, 23503988, 99891949, 199783898, 399567796]

約数ペア:

[(1, 399567796), (2, 199783898), (4, 99891949), (17, 23503988), (19, 21029884), (34, 11751994), (38, 10514942), (41, 9745556), (68, 5875997), (76, 5257471), (82, 4872778), (164, 2436389), (323, 1237052), (361, 1106836), (397, 1006468), (646, 618526), (697, 573268), (722, 553418), (779, 512924), (794, 503234), (1292, 309263), (1394, 286634), (1444, 276709), (1558, 256462), (1588, 251617), (2788, 143317), (3116, 128231), (6137, 65108), (6749, 59204), (7543, 52972), (12274, 32554), (13243, 30172), (13498, 29602), (14801, 26996), (15086, 26486), (16277, 24548)]