404755840

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{887}}^1$

素因数の和:960

約数の個数: 128

約数和(自身を含む): 1043435520

約数和(自身を除く): 638679680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 32, 40, 46, 62, 64, 80, 92, 115, 124, 128, 155, 160, 184, 230, 248, 310, 320, 368, 460, 496, 620, 640, 713, 736, 887, 920, 992, 1240, 1426, 1472, 1774, 1840, 1984, 2480, 2852, 2944, 3548, 3565, 3680, 3968, 4435, 4960, 5704, 7096, 7130, 7360, 8870, 9920, 11408, 14192, 14260, 14720, 17740, 19840, 20401, 22816, 27497, 28384, 28520, 35480, 40802, 45632, 54994, 56768, 57040, 70960, 81604, 91264, 102005, 109988, 113536, 114080, 137485, 141920, 163208, 204010, 219976, 228160, 274970, 283840, 326416, 408020, 439952, 456320, 549940, 567680, 632431, 652832, 816040, 879904, 1099880, 1264862, 1305664, 1632080, 1759808, 2199760, 2529724, 2611328, 3162155, 3264160, 3519616, 4399520, 5059448, 6324310, 6528320, 8799040, 10118896, 12648620, 13056640, 17598080, 20237792, 25297240, 40475584, 50594480, 80951168, 101188960, 202377920, 404755840]

約数ペア:

[(1, 404755840), (2, 202377920), (4, 101188960), (5, 80951168), (8, 50594480), (10, 40475584), (16, 25297240), (20, 20237792), (23, 17598080), (31, 13056640), (32, 12648620), (40, 10118896), (46, 8799040), (62, 6528320), (64, 6324310), (80, 5059448), (92, 4399520), (115, 3519616), (124, 3264160), (128, 3162155), (155, 2611328), (160, 2529724), (184, 2199760), (230, 1759808), (248, 1632080), (310, 1305664), (320, 1264862), (368, 1099880), (460, 879904), (496, 816040), (620, 652832), (640, 632431), (713, 567680), (736, 549940), (887, 456320), (920, 439952), (992, 408020), (1240, 326416), (1426, 283840), (1472, 274970), (1774, 228160), (1840, 219976), (1984, 204010), (2480, 163208), (2852, 141920), (2944, 137485), (3548, 114080), (3565, 113536), (3680, 109988), (3968, 102005), (4435, 91264), (4960, 81604), (5704, 70960), (7096, 57040), (7130, 56768), (7360, 54994), (8870, 45632), (9920, 40802), (11408, 35480), (14192, 28520), (14260, 28384), (14720, 27497), (17740, 22816), (19840, 20401)]