18647720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:187

約数の個数: 128

約数和(自身を含む): 53222400

約数和(自身を除く): 34574680

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 47, 52, 56, 65, 70, 91, 94, 104, 109, 130, 140, 182, 188, 218, 235, 260, 280, 329, 364, 376, 436, 455, 470, 520, 545, 611, 658, 728, 763, 872, 910, 940, 1090, 1222, 1316, 1417, 1526, 1645, 1820, 1880, 2180, 2444, 2632, 2834, 3052, 3055, 3290, 3640, 3815, 4277, 4360, 4888, 5123, 5668, 6104, 6110, 6580, 7085, 7630, 8554, 9919, 10246, 11336, 12220, 13160, 14170, 15260, 17108, 19838, 20492, 21385, 24440, 25615, 28340, 30520, 34216, 35861, 39676, 40984, 42770, 49595, 51230, 56680, 66599, 71722, 79352, 85540, 99190, 102460, 133198, 143444, 171080, 179305, 198380, 204920, 266396, 286888, 332995, 358610, 396760, 466193, 532792, 665990, 717220, 932386, 1331980, 1434440, 1864772, 2330965, 2663960, 3729544, 4661930, 9323860, 18647720]

約数ペア:

[(1, 18647720), (2, 9323860), (4, 4661930), (5, 3729544), (7, 2663960), (8, 2330965), (10, 1864772), (13, 1434440), (14, 1331980), (20, 932386), (26, 717220), (28, 665990), (35, 532792), (40, 466193), (47, 396760), (52, 358610), (56, 332995), (65, 286888), (70, 266396), (91, 204920), (94, 198380), (104, 179305), (109, 171080), (130, 143444), (140, 133198), (182, 102460), (188, 99190), (218, 85540), (235, 79352), (260, 71722), (280, 66599), (329, 56680), (364, 51230), (376, 49595), (436, 42770), (455, 40984), (470, 39676), (520, 35861), (545, 34216), (611, 30520), (658, 28340), (728, 25615), (763, 24440), (872, 21385), (910, 20492), (940, 19838), (1090, 17108), (1222, 15260), (1316, 14170), (1417, 13160), (1526, 12220), (1645, 11336), (1820, 10246), (1880, 9919), (2180, 8554), (2444, 7630), (2632, 7085), (2834, 6580), (3052, 6110), (3055, 6104), (3290, 5668), (3640, 5123), (3815, 4888), (4277, 4360)]