18918880

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1$

素因数の和:188

約数の個数: 96

約数和(自身を含む): 48009024

約数和(自身を除く): 29090144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 53, 80, 92, 97, 106, 115, 160, 184, 194, 212, 230, 265, 368, 388, 424, 460, 485, 530, 736, 776, 848, 920, 970, 1060, 1219, 1552, 1696, 1840, 1940, 2120, 2231, 2438, 3104, 3680, 3880, 4240, 4462, 4876, 5141, 6095, 7760, 8480, 8924, 9752, 10282, 11155, 12190, 15520, 17848, 19504, 20564, 22310, 24380, 25705, 35696, 39008, 41128, 44620, 48760, 51410, 71392, 82256, 89240, 97520, 102820, 118243, 164512, 178480, 195040, 205640, 236486, 356960, 411280, 472972, 591215, 822560, 945944, 1182430, 1891888, 2364860, 3783776, 4729720, 9459440, 18918880]

約数ペア:

[(1, 18918880), (2, 9459440), (4, 4729720), (5, 3783776), (8, 2364860), (10, 1891888), (16, 1182430), (20, 945944), (23, 822560), (32, 591215), (40, 472972), (46, 411280), (53, 356960), (80, 236486), (92, 205640), (97, 195040), (106, 178480), (115, 164512), (160, 118243), (184, 102820), (194, 97520), (212, 89240), (230, 82256), (265, 71392), (368, 51410), (388, 48760), (424, 44620), (460, 41128), (485, 39008), (530, 35696), (736, 25705), (776, 24380), (848, 22310), (920, 20564), (970, 19504), (1060, 17848), (1219, 15520), (1552, 12190), (1696, 11155), (1840, 10282), (1940, 9752), (2120, 8924), (2231, 8480), (2438, 7760), (3104, 6095), (3680, 5141), (3880, 4876), (4240, 4462)]