21136440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{797}}^1$

素因数の和:841

約数の個数: 128

約数和(自身を含む): 72394560

約数和(自身を除く): 51258120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 17, 20, 24, 26, 30, 34, 39, 40, 51, 52, 60, 65, 68, 78, 85, 102, 104, 120, 130, 136, 156, 170, 195, 204, 221, 255, 260, 312, 340, 390, 408, 442, 510, 520, 663, 680, 780, 797, 884, 1020, 1105, 1326, 1560, 1594, 1768, 2040, 2210, 2391, 2652, 3188, 3315, 3985, 4420, 4782, 5304, 6376, 6630, 7970, 8840, 9564, 10361, 11955, 13260, 13549, 15940, 19128, 20722, 23910, 26520, 27098, 31083, 31880, 40647, 41444, 47820, 51805, 54196, 62166, 67745, 81294, 82888, 95640, 103610, 108392, 124332, 135490, 155415, 162588, 176137, 203235, 207220, 248664, 270980, 310830, 325176, 352274, 406470, 414440, 528411, 541960, 621660, 704548, 812940, 880685, 1056822, 1243320, 1409096, 1625880, 1761370, 2113644, 2642055, 3522740, 4227288, 5284110, 7045480, 10568220, 21136440]

約数ペア:

[(1, 21136440), (2, 10568220), (3, 7045480), (4, 5284110), (5, 4227288), (6, 3522740), (8, 2642055), (10, 2113644), (12, 1761370), (13, 1625880), (15, 1409096), (17, 1243320), (20, 1056822), (24, 880685), (26, 812940), (30, 704548), (34, 621660), (39, 541960), (40, 528411), (51, 414440), (52, 406470), (60, 352274), (65, 325176), (68, 310830), (78, 270980), (85, 248664), (102, 207220), (104, 203235), (120, 176137), (130, 162588), (136, 155415), (156, 135490), (170, 124332), (195, 108392), (204, 103610), (221, 95640), (255, 82888), (260, 81294), (312, 67745), (340, 62166), (390, 54196), (408, 51805), (442, 47820), (510, 41444), (520, 40647), (663, 31880), (680, 31083), (780, 27098), (797, 26520), (884, 23910), (1020, 20722), (1105, 19128), (1326, 15940), (1560, 13549), (1594, 13260), (1768, 11955), (2040, 10361), (2210, 9564), (2391, 8840), (2652, 7970), (3188, 6630), (3315, 6376), (3985, 5304), (4420, 4782)]