20042150

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1$

素因数の和:138

約数の個数: 72

約数和(自身を含む): 42255480

約数和(自身を除く): 22213330

約数列:

[1, 2, 5, 10, 17, 19, 25, 34, 38, 50, 73, 85, 95, 146, 170, 190, 289, 323, 365, 425, 475, 578, 646, 730, 850, 950, 1241, 1387, 1445, 1615, 1825, 2482, 2774, 2890, 3230, 3650, 5491, 6205, 6935, 7225, 8075, 10982, 12410, 13870, 14450, 16150, 21097, 23579, 27455, 31025, 34675, 42194, 47158, 54910, 62050, 69350, 105485, 117895, 137275, 210970, 235790, 274550, 400843, 527425, 589475, 801686, 1054850, 1178950, 2004215, 4008430, 10021075, 20042150]

約数ペア:

[(1, 20042150), (2, 10021075), (5, 4008430), (10, 2004215), (17, 1178950), (19, 1054850), (25, 801686), (34, 589475), (38, 527425), (50, 400843), (73, 274550), (85, 235790), (95, 210970), (146, 137275), (170, 117895), (190, 105485), (289, 69350), (323, 62050), (365, 54910), (425, 47158), (475, 42194), (578, 34675), (646, 31025), (730, 27455), (850, 23579), (950, 21097), (1241, 16150), (1387, 14450), (1445, 13870), (1615, 12410), (1825, 10982), (2482, 8075), (2774, 7225), (2890, 6935), (3230, 6205), (3650, 5491)]