20569780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1$

素因数の和:102

約数の個数: 144

約数和(自身を含む): 58375296

約数和(自身を除く): 37805516

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 19, 20, 22, 28, 35, 37, 38, 44, 55, 70, 74, 76, 77, 95, 110, 133, 140, 148, 154, 185, 190, 209, 220, 259, 266, 308, 361, 370, 380, 385, 407, 418, 518, 532, 665, 703, 722, 740, 770, 814, 836, 1036, 1045, 1295, 1330, 1406, 1444, 1463, 1540, 1628, 1805, 2035, 2090, 2527, 2590, 2660, 2812, 2849, 2926, 3515, 3610, 3971, 4070, 4180, 4921, 5054, 5180, 5698, 5852, 7030, 7220, 7315, 7733, 7942, 8140, 9842, 10108, 11396, 12635, 13357, 14060, 14245, 14630, 15466, 15884, 19684, 19855, 24605, 25270, 26714, 27797, 28490, 29260, 30932, 38665, 39710, 49210, 50540, 53428, 54131, 55594, 56980, 66785, 77330, 79420, 93499, 98420, 108262, 111188, 133570, 138985, 146927, 154660, 186998, 216524, 267140, 270655, 277970, 293854, 373996, 467495, 541310, 555940, 587708, 734635, 934990, 1028489, 1082620, 1469270, 1869980, 2056978, 2938540, 4113956, 5142445, 10284890, 20569780]

約数ペア:

[(1, 20569780), (2, 10284890), (4, 5142445), (5, 4113956), (7, 2938540), (10, 2056978), (11, 1869980), (14, 1469270), (19, 1082620), (20, 1028489), (22, 934990), (28, 734635), (35, 587708), (37, 555940), (38, 541310), (44, 467495), (55, 373996), (70, 293854), (74, 277970), (76, 270655), (77, 267140), (95, 216524), (110, 186998), (133, 154660), (140, 146927), (148, 138985), (154, 133570), (185, 111188), (190, 108262), (209, 98420), (220, 93499), (259, 79420), (266, 77330), (308, 66785), (361, 56980), (370, 55594), (380, 54131), (385, 53428), (407, 50540), (418, 49210), (518, 39710), (532, 38665), (665, 30932), (703, 29260), (722, 28490), (740, 27797), (770, 26714), (814, 25270), (836, 24605), (1036, 19855), (1045, 19684), (1295, 15884), (1330, 15466), (1406, 14630), (1444, 14245), (1463, 14060), (1540, 13357), (1628, 12635), (1805, 11396), (2035, 10108), (2090, 9842), (2527, 8140), (2590, 7942), (2660, 7733), (2812, 7315), (2849, 7220), (2926, 7030), (3515, 5852), (3610, 5698), (3971, 5180), (4070, 5054), (4180, 4921)]