20139040

素因数分解:

$2^5\times 5^1\times {\mathrm{191}}^1\times {\mathrm{659}}^1$

素因数の和:865

約数の個数: 48

約数和(自身を含む): 47900160

約数和(自身を除く): 27761120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 191, 382, 659, 764, 955, 1318, 1528, 1910, 2636, 3056, 3295, 3820, 5272, 6112, 6590, 7640, 10544, 13180, 15280, 21088, 26360, 30560, 52720, 105440, 125869, 251738, 503476, 629345, 1006952, 1258690, 2013904, 2517380, 4027808, 5034760, 10069520, 20139040]

約数ペア:

[(1, 20139040), (2, 10069520), (4, 5034760), (5, 4027808), (8, 2517380), (10, 2013904), (16, 1258690), (20, 1006952), (32, 629345), (40, 503476), (80, 251738), (160, 125869), (191, 105440), (382, 52720), (659, 30560), (764, 26360), (955, 21088), (1318, 15280), (1528, 13180), (1910, 10544), (2636, 7640), (3056, 6590), (3295, 6112), (3820, 5272)]