21193360

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{191}}^1$

素因数の和:296

約数の個数: 80

約数和(自身を含む): 52853760

約数和(自身を除く): 31660400

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 73, 76, 80, 95, 146, 152, 190, 191, 292, 304, 365, 380, 382, 584, 730, 760, 764, 955, 1168, 1387, 1460, 1520, 1528, 1910, 2774, 2920, 3056, 3629, 3820, 5548, 5840, 6935, 7258, 7640, 11096, 13870, 13943, 14516, 15280, 18145, 22192, 27740, 27886, 29032, 36290, 55480, 55772, 58064, 69715, 72580, 110960, 111544, 139430, 145160, 223088, 264917, 278860, 290320, 529834, 557720, 1059668, 1115440, 1324585, 2119336, 2649170, 4238672, 5298340, 10596680, 21193360]

約数ペア:

[(1, 21193360), (2, 10596680), (4, 5298340), (5, 4238672), (8, 2649170), (10, 2119336), (16, 1324585), (19, 1115440), (20, 1059668), (38, 557720), (40, 529834), (73, 290320), (76, 278860), (80, 264917), (95, 223088), (146, 145160), (152, 139430), (190, 111544), (191, 110960), (292, 72580), (304, 69715), (365, 58064), (380, 55772), (382, 55480), (584, 36290), (730, 29032), (760, 27886), (764, 27740), (955, 22192), (1168, 18145), (1387, 15280), (1460, 14516), (1520, 13943), (1528, 13870), (1910, 11096), (2774, 7640), (2920, 7258), (3056, 6935), (3629, 5840), (3820, 5548)]