28409640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1091}}^1$

素因数の和:1143

約数の個数: 128

約数和(自身を含む): 100638720

約数和(自身を除く): 72229080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 56, 60, 62, 70, 84, 93, 105, 120, 124, 140, 155, 168, 186, 210, 217, 248, 280, 310, 372, 420, 434, 465, 620, 651, 744, 840, 868, 930, 1085, 1091, 1240, 1302, 1736, 1860, 2170, 2182, 2604, 3255, 3273, 3720, 4340, 4364, 5208, 5455, 6510, 6546, 7637, 8680, 8728, 10910, 13020, 13092, 15274, 16365, 21820, 22911, 26040, 26184, 30548, 32730, 33821, 38185, 43640, 45822, 61096, 65460, 67642, 76370, 91644, 101463, 114555, 130920, 135284, 152740, 169105, 183288, 202926, 229110, 236747, 270568, 305480, 338210, 405852, 458220, 473494, 507315, 676420, 710241, 811704, 916440, 946988, 1014630, 1183735, 1352840, 1420482, 1893976, 2029260, 2367470, 2840964, 3551205, 4058520, 4734940, 5681928, 7102410, 9469880, 14204820, 28409640]

約数ペア:

[(1, 28409640), (2, 14204820), (3, 9469880), (4, 7102410), (5, 5681928), (6, 4734940), (7, 4058520), (8, 3551205), (10, 2840964), (12, 2367470), (14, 2029260), (15, 1893976), (20, 1420482), (21, 1352840), (24, 1183735), (28, 1014630), (30, 946988), (31, 916440), (35, 811704), (40, 710241), (42, 676420), (56, 507315), (60, 473494), (62, 458220), (70, 405852), (84, 338210), (93, 305480), (105, 270568), (120, 236747), (124, 229110), (140, 202926), (155, 183288), (168, 169105), (186, 152740), (210, 135284), (217, 130920), (248, 114555), (280, 101463), (310, 91644), (372, 76370), (420, 67642), (434, 65460), (465, 61096), (620, 45822), (651, 43640), (744, 38185), (840, 33821), (868, 32730), (930, 30548), (1085, 26184), (1091, 26040), (1240, 22911), (1302, 21820), (1736, 16365), (1860, 15274), (2170, 13092), (2182, 13020), (2604, 10910), (3255, 8728), (3273, 8680), (3720, 7637), (4340, 6546), (4364, 6510), (5208, 5455)]