28212500

素因数分解:

$2^2\times 5^5\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:127

約数の個数: 72

約数和(自身を含む): 64417752

約数和(自身を除く): 36205252

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 61, 74, 100, 122, 125, 148, 185, 244, 250, 305, 370, 500, 610, 625, 740, 925, 1220, 1250, 1525, 1850, 2257, 2500, 3050, 3125, 3700, 4514, 4625, 6100, 6250, 7625, 9028, 9250, 11285, 12500, 15250, 18500, 22570, 23125, 30500, 38125, 45140, 46250, 56425, 76250, 92500, 112850, 115625, 152500, 190625, 225700, 231250, 282125, 381250, 462500, 564250, 762500, 1128500, 1410625, 2821250, 5642500, 7053125, 14106250, 28212500]

約数ペア:

[(1, 28212500), (2, 14106250), (4, 7053125), (5, 5642500), (10, 2821250), (20, 1410625), (25, 1128500), (37, 762500), (50, 564250), (61, 462500), (74, 381250), (100, 282125), (122, 231250), (125, 225700), (148, 190625), (185, 152500), (244, 115625), (250, 112850), (305, 92500), (370, 76250), (500, 56425), (610, 46250), (625, 45140), (740, 38125), (925, 30500), (1220, 23125), (1250, 22570), (1525, 18500), (1850, 15250), (2257, 12500), (2500, 11285), (3050, 9250), (3125, 9028), (3700, 7625), (4514, 6250), (4625, 6100)]