18732980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{463}}^1$

素因数の和:513

約数の個数: 72

約数和(自身を含む): 47862528

約数和(自身を除く): 29129548

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 289, 340, 463, 476, 578, 595, 926, 1156, 1190, 1445, 1852, 2023, 2315, 2380, 2890, 3241, 4046, 4630, 5780, 6482, 7871, 8092, 9260, 10115, 12964, 15742, 16205, 20230, 31484, 32410, 39355, 40460, 55097, 64820, 78710, 110194, 133807, 157420, 220388, 267614, 275485, 535228, 550970, 669035, 936649, 1101940, 1338070, 1873298, 2676140, 3746596, 4683245, 9366490, 18732980]

約数ペア:

[(1, 18732980), (2, 9366490), (4, 4683245), (5, 3746596), (7, 2676140), (10, 1873298), (14, 1338070), (17, 1101940), (20, 936649), (28, 669035), (34, 550970), (35, 535228), (68, 275485), (70, 267614), (85, 220388), (119, 157420), (140, 133807), (170, 110194), (238, 78710), (289, 64820), (340, 55097), (463, 40460), (476, 39355), (578, 32410), (595, 31484), (926, 20230), (1156, 16205), (1190, 15742), (1445, 12964), (1852, 10115), (2023, 9260), (2315, 8092), (2380, 7871), (2890, 6482), (3241, 5780), (4046, 4630)]