20661480

素因数分解:

$2^3\times 3^4\times 5^1\times 7^1\times {\mathrm{911}}^1$

素因数の和:941

約数の個数: 160

約数和(自身を含む): 79453440

約数和(自身を除く): 58791960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 81, 84, 90, 105, 108, 120, 126, 135, 140, 162, 168, 180, 189, 210, 216, 252, 270, 280, 315, 324, 360, 378, 405, 420, 504, 540, 567, 630, 648, 756, 810, 840, 911, 945, 1080, 1134, 1260, 1512, 1620, 1822, 1890, 2268, 2520, 2733, 2835, 3240, 3644, 3780, 4536, 4555, 5466, 5670, 6377, 7288, 7560, 8199, 9110, 10932, 11340, 12754, 13665, 16398, 18220, 19131, 21864, 22680, 24597, 25508, 27330, 31885, 32796, 36440, 38262, 40995, 49194, 51016, 54660, 57393, 63770, 65592, 73791, 76524, 81990, 95655, 98388, 109320, 114786, 122985, 127540, 147582, 153048, 163980, 172179, 191310, 196776, 229572, 245970, 255080, 286965, 295164, 327960, 344358, 368955, 382620, 459144, 491940, 516537, 573930, 590328, 688716, 737910, 765240, 860895, 983880, 1033074, 1147860, 1377432, 1475820, 1721790, 2066148, 2295720, 2582685, 2951640, 3443580, 4132296, 5165370, 6887160, 10330740, 20661480]

約数ペア:

[(1, 20661480), (2, 10330740), (3, 6887160), (4, 5165370), (5, 4132296), (6, 3443580), (7, 2951640), (8, 2582685), (9, 2295720), (10, 2066148), (12, 1721790), (14, 1475820), (15, 1377432), (18, 1147860), (20, 1033074), (21, 983880), (24, 860895), (27, 765240), (28, 737910), (30, 688716), (35, 590328), (36, 573930), (40, 516537), (42, 491940), (45, 459144), (54, 382620), (56, 368955), (60, 344358), (63, 327960), (70, 295164), (72, 286965), (81, 255080), (84, 245970), (90, 229572), (105, 196776), (108, 191310), (120, 172179), (126, 163980), (135, 153048), (140, 147582), (162, 127540), (168, 122985), (180, 114786), (189, 109320), (210, 98388), (216, 95655), (252, 81990), (270, 76524), (280, 73791), (315, 65592), (324, 63770), (360, 57393), (378, 54660), (405, 51016), (420, 49194), (504, 40995), (540, 38262), (567, 36440), (630, 32796), (648, 31885), (756, 27330), (810, 25508), (840, 24597), (911, 22680), (945, 21864), (1080, 19131), (1134, 18220), (1260, 16398), (1512, 13665), (1620, 12754), (1822, 11340), (1890, 10932), (2268, 9110), (2520, 8199), (2733, 7560), (2835, 7288), (3240, 6377), (3644, 5670), (3780, 5466), (4536, 4555)]