81850290

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{3881}}^1$

素因数の和:3947

約数の個数: 64

約数和(自身を含む): 212423040

約数和(自身を除く): 130572750

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 30, 37, 38, 57, 74, 95, 111, 114, 185, 190, 222, 285, 370, 555, 570, 703, 1110, 1406, 2109, 3515, 3881, 4218, 7030, 7762, 10545, 11643, 19405, 21090, 23286, 38810, 58215, 73739, 116430, 143597, 147478, 221217, 287194, 368695, 430791, 442434, 717985, 737390, 861582, 1106085, 1435970, 2153955, 2212170, 2728343, 4307910, 5456686, 8185029, 13641715, 16370058, 27283430, 40925145, 81850290]

約数ペア:

[(1, 81850290), (2, 40925145), (3, 27283430), (5, 16370058), (6, 13641715), (10, 8185029), (15, 5456686), (19, 4307910), (30, 2728343), (37, 2212170), (38, 2153955), (57, 1435970), (74, 1106085), (95, 861582), (111, 737390), (114, 717985), (185, 442434), (190, 430791), (222, 368695), (285, 287194), (370, 221217), (555, 147478), (570, 143597), (703, 116430), (1110, 73739), (1406, 58215), (2109, 38810), (3515, 23286), (3881, 21090), (4218, 19405), (7030, 11643), (7762, 10545)]