201436640

素因数分解:

$2^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{20639}}^1$

素因数の和:20715

約数の個数: 48

約数和(自身を含む): 483719040

約数和(自身を除く): 282282400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 80, 122, 160, 244, 305, 488, 610, 976, 1220, 1952, 2440, 4880, 9760, 20639, 41278, 82556, 103195, 165112, 206390, 330224, 412780, 660448, 825560, 1258979, 1651120, 2517958, 3302240, 5035916, 6294895, 10071832, 12589790, 20143664, 25179580, 40287328, 50359160, 100718320, 201436640]

約数ペア:

[(1, 201436640), (2, 100718320), (4, 50359160), (5, 40287328), (8, 25179580), (10, 20143664), (16, 12589790), (20, 10071832), (32, 6294895), (40, 5035916), (61, 3302240), (80, 2517958), (122, 1651120), (160, 1258979), (244, 825560), (305, 660448), (488, 412780), (610, 330224), (976, 206390), (1220, 165112), (1952, 103195), (2440, 82556), (4880, 41278), (9760, 20639)]