81818940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10253}}^1$

素因数の和:10291

約数の個数: 96

約数和(自身を含む): 275627520

約数和(自身を除く): 193808580

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 60, 70, 76, 84, 95, 105, 114, 133, 140, 190, 210, 228, 266, 285, 380, 399, 420, 532, 570, 665, 798, 1140, 1330, 1596, 1995, 2660, 3990, 7980, 10253, 20506, 30759, 41012, 51265, 61518, 71771, 102530, 123036, 143542, 153795, 194807, 205060, 215313, 287084, 307590, 358855, 389614, 430626, 584421, 615180, 717710, 779228, 861252, 974035, 1076565, 1168842, 1363649, 1435420, 1948070, 2153130, 2337684, 2727298, 2922105, 3896140, 4090947, 4306260, 5454596, 5844210, 6818245, 8181894, 11688420, 13636490, 16363788, 20454735, 27272980, 40909470, 81818940]

約数ペア:

[(1, 81818940), (2, 40909470), (3, 27272980), (4, 20454735), (5, 16363788), (6, 13636490), (7, 11688420), (10, 8181894), (12, 6818245), (14, 5844210), (15, 5454596), (19, 4306260), (20, 4090947), (21, 3896140), (28, 2922105), (30, 2727298), (35, 2337684), (38, 2153130), (42, 1948070), (57, 1435420), (60, 1363649), (70, 1168842), (76, 1076565), (84, 974035), (95, 861252), (105, 779228), (114, 717710), (133, 615180), (140, 584421), (190, 430626), (210, 389614), (228, 358855), (266, 307590), (285, 287084), (380, 215313), (399, 205060), (420, 194807), (532, 153795), (570, 143542), (665, 123036), (798, 102530), (1140, 71771), (1330, 61518), (1596, 51265), (1995, 41012), (2660, 30759), (3990, 20506), (7980, 10253)]