217873456

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{379}}^1$

素因数の和:498

約数の個数: 80

約数和(自身を含む): 467430400

約数和(自身を除く): 249556944

約数列:

[1, 2, 4, 8, 16, 19, 31, 38, 61, 62, 76, 122, 124, 152, 244, 248, 304, 379, 488, 496, 589, 758, 976, 1159, 1178, 1516, 1891, 2318, 2356, 3032, 3782, 4636, 4712, 6064, 7201, 7564, 9272, 9424, 11749, 14402, 15128, 18544, 23119, 23498, 28804, 30256, 35929, 46238, 46996, 57608, 71858, 92476, 93992, 115216, 143716, 184952, 187984, 223231, 287432, 369904, 439261, 446462, 574864, 716689, 878522, 892924, 1433378, 1757044, 1785848, 2866756, 3514088, 3571696, 5733512, 7028176, 11467024, 13617091, 27234182, 54468364, 108936728, 217873456]

約数ペア:

[(1, 217873456), (2, 108936728), (4, 54468364), (8, 27234182), (16, 13617091), (19, 11467024), (31, 7028176), (38, 5733512), (61, 3571696), (62, 3514088), (76, 2866756), (122, 1785848), (124, 1757044), (152, 1433378), (244, 892924), (248, 878522), (304, 716689), (379, 574864), (488, 446462), (496, 439261), (589, 369904), (758, 287432), (976, 223231), (1159, 187984), (1178, 184952), (1516, 143716), (1891, 115216), (2318, 93992), (2356, 92476), (3032, 71858), (3782, 57608), (4636, 46996), (4712, 46238), (6064, 35929), (7201, 30256), (7564, 28804), (9272, 23498), (9424, 23119), (11749, 18544), (14402, 15128)]