28157920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{811}}^1$

素因数の和:864

約数の個数: 96

約数和(自身を含む): 78575616

約数和(自身を除く): 50417696

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 160, 217, 224, 248, 280, 310, 434, 496, 560, 620, 811, 868, 992, 1085, 1120, 1240, 1622, 1736, 2170, 2480, 3244, 3472, 4055, 4340, 4960, 5677, 6488, 6944, 8110, 8680, 11354, 12976, 16220, 17360, 22708, 25141, 25952, 28385, 32440, 34720, 45416, 50282, 56770, 64880, 90832, 100564, 113540, 125705, 129760, 175987, 181664, 201128, 227080, 251410, 351974, 402256, 454160, 502820, 703948, 804512, 879935, 908320, 1005640, 1407896, 1759870, 2011280, 2815792, 3519740, 4022560, 5631584, 7039480, 14078960, 28157920]

約数ペア:

[(1, 28157920), (2, 14078960), (4, 7039480), (5, 5631584), (7, 4022560), (8, 3519740), (10, 2815792), (14, 2011280), (16, 1759870), (20, 1407896), (28, 1005640), (31, 908320), (32, 879935), (35, 804512), (40, 703948), (56, 502820), (62, 454160), (70, 402256), (80, 351974), (112, 251410), (124, 227080), (140, 201128), (155, 181664), (160, 175987), (217, 129760), (224, 125705), (248, 113540), (280, 100564), (310, 90832), (434, 64880), (496, 56770), (560, 50282), (620, 45416), (811, 34720), (868, 32440), (992, 28385), (1085, 25952), (1120, 25141), (1240, 22708), (1622, 17360), (1736, 16220), (2170, 12976), (2480, 11354), (3244, 8680), (3472, 8110), (4055, 6944), (4340, 6488), (4960, 5677)]