20315940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:353

約数の個数: 96

約数和(自身を含む): 60963840

約数和(自身を除く): 40647900

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 71, 76, 95, 114, 142, 190, 213, 228, 251, 284, 285, 355, 380, 426, 502, 570, 710, 753, 852, 1004, 1065, 1140, 1255, 1349, 1420, 1506, 2130, 2510, 2698, 3012, 3765, 4047, 4260, 4769, 5020, 5396, 6745, 7530, 8094, 9538, 13490, 14307, 15060, 16188, 17821, 19076, 20235, 23845, 26980, 28614, 35642, 40470, 47690, 53463, 57228, 71284, 71535, 80940, 89105, 95380, 106926, 143070, 178210, 213852, 267315, 286140, 338599, 356420, 534630, 677198, 1015797, 1069260, 1354396, 1692995, 2031594, 3385990, 4063188, 5078985, 6771980, 10157970, 20315940]

約数ペア:

[(1, 20315940), (2, 10157970), (3, 6771980), (4, 5078985), (5, 4063188), (6, 3385990), (10, 2031594), (12, 1692995), (15, 1354396), (19, 1069260), (20, 1015797), (30, 677198), (38, 534630), (57, 356420), (60, 338599), (71, 286140), (76, 267315), (95, 213852), (114, 178210), (142, 143070), (190, 106926), (213, 95380), (228, 89105), (251, 80940), (284, 71535), (285, 71284), (355, 57228), (380, 53463), (426, 47690), (502, 40470), (570, 35642), (710, 28614), (753, 26980), (852, 23845), (1004, 20235), (1065, 19076), (1140, 17821), (1255, 16188), (1349, 15060), (1420, 14307), (1506, 13490), (2130, 9538), (2510, 8094), (2698, 7530), (3012, 6745), (3765, 5396), (4047, 5020), (4260, 4769)]