278376280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2467}}^1$

素因数の和:2529

約数の個数: 128

約数和(自身を含む): 796078080

約数和(自身を除く): 517701800

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 31, 35, 40, 52, 56, 62, 65, 70, 91, 104, 124, 130, 140, 155, 182, 217, 248, 260, 280, 310, 364, 403, 434, 455, 520, 620, 728, 806, 868, 910, 1085, 1240, 1612, 1736, 1820, 2015, 2170, 2467, 2821, 3224, 3640, 4030, 4340, 4934, 5642, 8060, 8680, 9868, 11284, 12335, 14105, 16120, 17269, 19736, 22568, 24670, 28210, 32071, 34538, 49340, 56420, 64142, 69076, 76477, 86345, 98680, 112840, 128284, 138152, 152954, 160355, 172690, 224497, 256568, 305908, 320710, 345380, 382385, 448994, 535339, 611816, 641420, 690760, 764770, 897988, 994201, 1070678, 1122485, 1282840, 1529540, 1795976, 1988402, 2141356, 2244970, 2676695, 3059080, 3976804, 4282712, 4489940, 4971005, 5353390, 6959407, 7953608, 8979880, 9942010, 10706780, 13918814, 19884020, 21413560, 27837628, 34797035, 39768040, 55675256, 69594070, 139188140, 278376280]

約数ペア:

[(1, 278376280), (2, 139188140), (4, 69594070), (5, 55675256), (7, 39768040), (8, 34797035), (10, 27837628), (13, 21413560), (14, 19884020), (20, 13918814), (26, 10706780), (28, 9942010), (31, 8979880), (35, 7953608), (40, 6959407), (52, 5353390), (56, 4971005), (62, 4489940), (65, 4282712), (70, 3976804), (91, 3059080), (104, 2676695), (124, 2244970), (130, 2141356), (140, 1988402), (155, 1795976), (182, 1529540), (217, 1282840), (248, 1122485), (260, 1070678), (280, 994201), (310, 897988), (364, 764770), (403, 690760), (434, 641420), (455, 611816), (520, 535339), (620, 448994), (728, 382385), (806, 345380), (868, 320710), (910, 305908), (1085, 256568), (1240, 224497), (1612, 172690), (1736, 160355), (1820, 152954), (2015, 138152), (2170, 128284), (2467, 112840), (2821, 98680), (3224, 86345), (3640, 76477), (4030, 69076), (4340, 64142), (4934, 56420), (5642, 49340), (8060, 34538), (8680, 32071), (9868, 28210), (11284, 24670), (12335, 22568), (14105, 19736), (16120, 17269)]