1820825920

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^3\times {\mathrm{191}}^1$

素因数の和:301

約数の個数: 112

約数和(自身を含む): 4503822336

約数和(自身を除く): 2682996416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 191, 248, 310, 320, 382, 496, 620, 764, 955, 961, 992, 1240, 1528, 1910, 1922, 1984, 2480, 3056, 3820, 3844, 4805, 4960, 5921, 6112, 7640, 7688, 9610, 9920, 11842, 12224, 15280, 15376, 19220, 23684, 29605, 29791, 30560, 30752, 38440, 47368, 59210, 59582, 61120, 61504, 76880, 94736, 118420, 119164, 148955, 153760, 183551, 189472, 236840, 238328, 297910, 307520, 367102, 378944, 473680, 476656, 595820, 734204, 917755, 947360, 953312, 1191640, 1468408, 1835510, 1894720, 1906624, 2383280, 2936816, 3671020, 4766560, 5690081, 5873632, 7342040, 9533120, 11380162, 11747264, 14684080, 22760324, 28450405, 29368160, 45520648, 56900810, 58736320, 91041296, 113801620, 182082592, 227603240, 364165184, 455206480, 910412960, 1820825920]

約数ペア:

[(1, 1820825920), (2, 910412960), (4, 455206480), (5, 364165184), (8, 227603240), (10, 182082592), (16, 113801620), (20, 91041296), (31, 58736320), (32, 56900810), (40, 45520648), (62, 29368160), (64, 28450405), (80, 22760324), (124, 14684080), (155, 11747264), (160, 11380162), (191, 9533120), (248, 7342040), (310, 5873632), (320, 5690081), (382, 4766560), (496, 3671020), (620, 2936816), (764, 2383280), (955, 1906624), (961, 1894720), (992, 1835510), (1240, 1468408), (1528, 1191640), (1910, 953312), (1922, 947360), (1984, 917755), (2480, 734204), (3056, 595820), (3820, 476656), (3844, 473680), (4805, 378944), (4960, 367102), (5921, 307520), (6112, 297910), (7640, 238328), (7688, 236840), (9610, 189472), (9920, 183551), (11842, 153760), (12224, 148955), (15280, 119164), (15376, 118420), (19220, 94736), (23684, 76880), (29605, 61504), (29791, 61120), (30560, 59582), (30752, 59210), (38440, 47368)]