1821988090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43391}}^1$

素因数の和:43447

約数の個数: 64

約数和(自身を含む): 3936522240

約数和(自身を除く): 2114534150

約数列:

[1, 2, 5, 10, 13, 17, 19, 26, 34, 38, 65, 85, 95, 130, 170, 190, 221, 247, 323, 442, 494, 646, 1105, 1235, 1615, 2210, 2470, 3230, 4199, 8398, 20995, 41990, 43391, 86782, 216955, 433910, 564083, 737647, 824429, 1128166, 1475294, 1648858, 2820415, 3688235, 4122145, 5640830, 7376470, 8244290, 9589411, 10717577, 14015293, 19178822, 21435154, 28030586, 47947055, 53587885, 70076465, 95894110, 107175770, 140152930, 182198809, 364397618, 910994045, 1821988090]

約数ペア:

[(1, 1821988090), (2, 910994045), (5, 364397618), (10, 182198809), (13, 140152930), (17, 107175770), (19, 95894110), (26, 70076465), (34, 53587885), (38, 47947055), (65, 28030586), (85, 21435154), (95, 19178822), (130, 14015293), (170, 10717577), (190, 9589411), (221, 8244290), (247, 7376470), (323, 5640830), (442, 4122145), (494, 3688235), (646, 2820415), (1105, 1648858), (1235, 1475294), (1615, 1128166), (2210, 824429), (2470, 737647), (3230, 564083), (4199, 433910), (8398, 216955), (20995, 86782), (41990, 43391)]