640458

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1$

素因数の和:68

約数の個数: 96

約数和(自身を含む): 1886976

約数和(自身を除く): 1246518

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 17, 18, 21, 23, 26, 34, 39, 42, 46, 51, 63, 69, 78, 91, 102, 117, 119, 126, 138, 153, 161, 182, 207, 221, 234, 238, 273, 299, 306, 322, 357, 391, 414, 442, 483, 546, 598, 663, 714, 782, 819, 897, 966, 1071, 1173, 1326, 1449, 1547, 1638, 1794, 1989, 2093, 2142, 2346, 2691, 2737, 2898, 3094, 3519, 3978, 4186, 4641, 5083, 5382, 5474, 6279, 7038, 8211, 9282, 10166, 12558, 13923, 15249, 16422, 18837, 24633, 27846, 30498, 35581, 37674, 45747, 49266, 71162, 91494, 106743, 213486, 320229, 640458]

約数ペア:

[(1, 640458), (2, 320229), (3, 213486), (6, 106743), (7, 91494), (9, 71162), (13, 49266), (14, 45747), (17, 37674), (18, 35581), (21, 30498), (23, 27846), (26, 24633), (34, 18837), (39, 16422), (42, 15249), (46, 13923), (51, 12558), (63, 10166), (69, 9282), (78, 8211), (91, 7038), (102, 6279), (117, 5474), (119, 5382), (126, 5083), (138, 4641), (153, 4186), (161, 3978), (182, 3519), (207, 3094), (221, 2898), (234, 2737), (238, 2691), (273, 2346), (299, 2142), (306, 2093), (322, 1989), (357, 1794), (391, 1638), (414, 1547), (442, 1449), (483, 1326), (546, 1173), (598, 1071), (663, 966), (714, 897), (782, 819)]