2851380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:126

約数の個数: 144

約数和(自身を含む): 10343424

約数和(自身を除く): 7492044

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 31, 35, 36, 42, 45, 60, 62, 63, 70, 73, 84, 90, 93, 105, 124, 126, 140, 146, 155, 180, 186, 210, 217, 219, 252, 279, 292, 310, 315, 365, 372, 420, 434, 438, 465, 511, 558, 620, 630, 651, 657, 730, 868, 876, 930, 1022, 1085, 1095, 1116, 1260, 1302, 1314, 1395, 1460, 1533, 1860, 1953, 2044, 2170, 2190, 2263, 2555, 2604, 2628, 2790, 3066, 3255, 3285, 3906, 4340, 4380, 4526, 4599, 5110, 5580, 6132, 6510, 6570, 6789, 7665, 7812, 9052, 9198, 9765, 10220, 11315, 13020, 13140, 13578, 15330, 15841, 18396, 19530, 20367, 22630, 22995, 27156, 30660, 31682, 33945, 39060, 40734, 45260, 45990, 47523, 63364, 67890, 79205, 81468, 91980, 95046, 101835, 135780, 142569, 158410, 190092, 203670, 237615, 285138, 316820, 407340, 475230, 570276, 712845, 950460, 1425690, 2851380]

約数ペア:

[(1, 2851380), (2, 1425690), (3, 950460), (4, 712845), (5, 570276), (6, 475230), (7, 407340), (9, 316820), (10, 285138), (12, 237615), (14, 203670), (15, 190092), (18, 158410), (20, 142569), (21, 135780), (28, 101835), (30, 95046), (31, 91980), (35, 81468), (36, 79205), (42, 67890), (45, 63364), (60, 47523), (62, 45990), (63, 45260), (70, 40734), (73, 39060), (84, 33945), (90, 31682), (93, 30660), (105, 27156), (124, 22995), (126, 22630), (140, 20367), (146, 19530), (155, 18396), (180, 15841), (186, 15330), (210, 13578), (217, 13140), (219, 13020), (252, 11315), (279, 10220), (292, 9765), (310, 9198), (315, 9052), (365, 7812), (372, 7665), (420, 6789), (434, 6570), (438, 6510), (465, 6132), (511, 5580), (558, 5110), (620, 4599), (630, 4526), (651, 4380), (657, 4340), (730, 3906), (868, 3285), (876, 3255), (930, 3066), (1022, 2790), (1085, 2628), (1095, 2604), (1116, 2555), (1260, 2263), (1302, 2190), (1314, 2170), (1395, 2044), (1460, 1953), (1533, 1860)]