256518990

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31321}}^1$

素因数の和:31354

約数の個数: 96

約数和(自身を含む): 820886976

約数和(自身を除く): 564367986

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 26, 30, 35, 39, 42, 45, 63, 65, 70, 78, 90, 91, 105, 117, 126, 130, 182, 195, 210, 234, 273, 315, 390, 455, 546, 585, 630, 819, 910, 1170, 1365, 1638, 2730, 4095, 8190, 31321, 62642, 93963, 156605, 187926, 219247, 281889, 313210, 407173, 438494, 469815, 563778, 657741, 814346, 939630, 1096235, 1221519, 1315482, 1409445, 1973223, 2035865, 2192470, 2443038, 2818890, 2850211, 3288705, 3664557, 3946446, 4071730, 5700422, 6107595, 6577410, 7329114, 8550633, 9866115, 12215190, 14251055, 17101266, 18322785, 19732230, 25651899, 28502110, 36645570, 42753165, 51303798, 85506330, 128259495, 256518990]

約数ペア:

[(1, 256518990), (2, 128259495), (3, 85506330), (5, 51303798), (6, 42753165), (7, 36645570), (9, 28502110), (10, 25651899), (13, 19732230), (14, 18322785), (15, 17101266), (18, 14251055), (21, 12215190), (26, 9866115), (30, 8550633), (35, 7329114), (39, 6577410), (42, 6107595), (45, 5700422), (63, 4071730), (65, 3946446), (70, 3664557), (78, 3288705), (90, 2850211), (91, 2818890), (105, 2443038), (117, 2192470), (126, 2035865), (130, 1973223), (182, 1409445), (195, 1315482), (210, 1221519), (234, 1096235), (273, 939630), (315, 814346), (390, 657741), (455, 563778), (546, 469815), (585, 438494), (630, 407173), (819, 313210), (910, 281889), (1170, 219247), (1365, 187926), (1638, 156605), (2730, 93963), (4095, 62642), (8190, 31321)]