208728140

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1\times {\mathrm{787}}^1$

素因数の和:1034

約数の個数: 48

約数和(自身を含む): 446796000

約数和(自身を除く): 238067860

約数列:

[1, 2, 4, 5, 10, 20, 89, 149, 178, 298, 356, 445, 596, 745, 787, 890, 1490, 1574, 1780, 2980, 3148, 3935, 7870, 13261, 15740, 26522, 53044, 66305, 70043, 117263, 132610, 140086, 234526, 265220, 280172, 350215, 469052, 586315, 700430, 1172630, 1400860, 2345260, 10436407, 20872814, 41745628, 52182035, 104364070, 208728140]

約数ペア:

[(1, 208728140), (2, 104364070), (4, 52182035), (5, 41745628), (10, 20872814), (20, 10436407), (89, 2345260), (149, 1400860), (178, 1172630), (298, 700430), (356, 586315), (445, 469052), (596, 350215), (745, 280172), (787, 265220), (890, 234526), (1490, 140086), (1574, 132610), (1780, 117263), (2980, 70043), (3148, 66305), (3935, 53044), (7870, 26522), (13261, 15740)]