81845640

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{25261}}^1$

素因数の和:25284

約数の個数: 80

約数和(自身を含む): 275103180

約数和(自身を除く): 193257540

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 270, 324, 360, 405, 540, 648, 810, 1080, 1620, 3240, 25261, 50522, 75783, 101044, 126305, 151566, 202088, 227349, 252610, 303132, 378915, 454698, 505220, 606264, 682047, 757830, 909396, 1010440, 1136745, 1364094, 1515660, 1818792, 2046141, 2273490, 2728188, 3031320, 3410235, 4092282, 4546980, 5456376, 6820470, 8184564, 9093960, 10230705, 13640940, 16369128, 20461410, 27281880, 40922820, 81845640]

約数ペア:

[(1, 81845640), (2, 40922820), (3, 27281880), (4, 20461410), (5, 16369128), (6, 13640940), (8, 10230705), (9, 9093960), (10, 8184564), (12, 6820470), (15, 5456376), (18, 4546980), (20, 4092282), (24, 3410235), (27, 3031320), (30, 2728188), (36, 2273490), (40, 2046141), (45, 1818792), (54, 1515660), (60, 1364094), (72, 1136745), (81, 1010440), (90, 909396), (108, 757830), (120, 682047), (135, 606264), (162, 505220), (180, 454698), (216, 378915), (270, 303132), (324, 252610), (360, 227349), (405, 202088), (540, 151566), (648, 126305), (810, 101044), (1080, 75783), (1620, 50522), (3240, 25261)]