21981100

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{503}}^1$

素因数の和:559

約数の個数: 72

約数和(自身を含む): 52496640

約数和(自身を除く): 30515540

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 25, 38, 46, 50, 76, 92, 95, 100, 115, 190, 230, 380, 437, 460, 475, 503, 575, 874, 950, 1006, 1150, 1748, 1900, 2012, 2185, 2300, 2515, 4370, 5030, 8740, 9557, 10060, 10925, 11569, 12575, 19114, 21850, 23138, 25150, 38228, 43700, 46276, 47785, 50300, 57845, 95570, 115690, 191140, 219811, 231380, 238925, 289225, 439622, 477850, 578450, 879244, 955700, 1099055, 1156900, 2198110, 4396220, 5495275, 10990550, 21981100]

約数ペア:

[(1, 21981100), (2, 10990550), (4, 5495275), (5, 4396220), (10, 2198110), (19, 1156900), (20, 1099055), (23, 955700), (25, 879244), (38, 578450), (46, 477850), (50, 439622), (76, 289225), (92, 238925), (95, 231380), (100, 219811), (115, 191140), (190, 115690), (230, 95570), (380, 57845), (437, 50300), (460, 47785), (475, 46276), (503, 43700), (575, 38228), (874, 25150), (950, 23138), (1006, 21850), (1150, 19114), (1748, 12575), (1900, 11569), (2012, 10925), (2185, 10060), (2300, 9557), (2515, 8740), (4370, 5030)]