388997427

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:209

約数の個数: 96

約数和(自身を含む): 683956224

約数和(自身を除く): 294958797

約数列:

[1, 3, 7, 13, 21, 39, 47, 49, 61, 71, 91, 141, 147, 183, 213, 273, 329, 427, 497, 611, 637, 793, 923, 987, 1281, 1491, 1833, 1911, 2303, 2379, 2769, 2867, 2989, 3337, 3479, 4277, 4331, 5551, 6461, 6909, 8601, 8967, 10011, 10437, 12831, 12993, 16653, 19383, 20069, 23359, 29939, 30317, 37271, 38857, 43381, 45227, 56303, 60207, 70077, 89817, 90951, 111813, 116571, 130143, 135681, 140483, 163513, 168909, 203557, 212219, 260897, 303667, 394121, 421449, 490539, 610671, 636657, 782691, 911001, 1182363, 1424899, 1826279, 2125669, 2646241, 2758847, 4274697, 5478837, 6377007, 7938723, 8276541, 9974293, 18523687, 29922879, 55571061, 129665809, 388997427]

約数ペア:

[(1, 388997427), (3, 129665809), (7, 55571061), (13, 29922879), (21, 18523687), (39, 9974293), (47, 8276541), (49, 7938723), (61, 6377007), (71, 5478837), (91, 4274697), (141, 2758847), (147, 2646241), (183, 2125669), (213, 1826279), (273, 1424899), (329, 1182363), (427, 911001), (497, 782691), (611, 636657), (637, 610671), (793, 490539), (923, 421449), (987, 394121), (1281, 303667), (1491, 260897), (1833, 212219), (1911, 203557), (2303, 168909), (2379, 163513), (2769, 140483), (2867, 135681), (2989, 130143), (3337, 116571), (3479, 111813), (4277, 90951), (4331, 89817), (5551, 70077), (6461, 60207), (6909, 56303), (8601, 45227), (8967, 43381), (10011, 38857), (10437, 37271), (12831, 30317), (12993, 29939), (16653, 23359), (19383, 20069)]