28279300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{569}}^1$

素因数の和:661

約数の個数: 72

約数和(自身を含む): 71245440

約数和(自身を除く): 42966140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 71, 100, 140, 142, 175, 284, 350, 355, 497, 569, 700, 710, 994, 1138, 1420, 1775, 1988, 2276, 2485, 2845, 3550, 3983, 4970, 5690, 7100, 7966, 9940, 11380, 12425, 14225, 15932, 19915, 24850, 28450, 39830, 40399, 49700, 56900, 79660, 80798, 99575, 161596, 199150, 201995, 282793, 398300, 403990, 565586, 807980, 1009975, 1131172, 1413965, 2019950, 2827930, 4039900, 5655860, 7069825, 14139650, 28279300]

約数ペア:

[(1, 28279300), (2, 14139650), (4, 7069825), (5, 5655860), (7, 4039900), (10, 2827930), (14, 2019950), (20, 1413965), (25, 1131172), (28, 1009975), (35, 807980), (50, 565586), (70, 403990), (71, 398300), (100, 282793), (140, 201995), (142, 199150), (175, 161596), (284, 99575), (350, 80798), (355, 79660), (497, 56900), (569, 49700), (700, 40399), (710, 39830), (994, 28450), (1138, 24850), (1420, 19915), (1775, 15932), (1988, 14225), (2276, 12425), (2485, 11380), (2845, 9940), (3550, 7966), (3983, 7100), (4970, 5690)]