20904260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:153

約数の個数: 96

約数和(自身を含む): 50676192

約数和(自身を除く): 29771932

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 41, 52, 53, 65, 74, 82, 106, 130, 148, 164, 185, 205, 212, 260, 265, 370, 410, 481, 530, 533, 689, 740, 820, 962, 1060, 1066, 1378, 1517, 1924, 1961, 2132, 2173, 2405, 2665, 2756, 3034, 3445, 3922, 4346, 4810, 5330, 6068, 6890, 7585, 7844, 8692, 9620, 9805, 10660, 10865, 13780, 15170, 19610, 19721, 21730, 25493, 28249, 30340, 39220, 39442, 43460, 50986, 56498, 78884, 80401, 98605, 101972, 112996, 127465, 141245, 160802, 197210, 254930, 282490, 321604, 394420, 402005, 509860, 564980, 804010, 1045213, 1608020, 2090426, 4180852, 5226065, 10452130, 20904260]

約数ペア:

[(1, 20904260), (2, 10452130), (4, 5226065), (5, 4180852), (10, 2090426), (13, 1608020), (20, 1045213), (26, 804010), (37, 564980), (41, 509860), (52, 402005), (53, 394420), (65, 321604), (74, 282490), (82, 254930), (106, 197210), (130, 160802), (148, 141245), (164, 127465), (185, 112996), (205, 101972), (212, 98605), (260, 80401), (265, 78884), (370, 56498), (410, 50986), (481, 43460), (530, 39442), (533, 39220), (689, 30340), (740, 28249), (820, 25493), (962, 21730), (1060, 19721), (1066, 19610), (1378, 15170), (1517, 13780), (1924, 10865), (1961, 10660), (2132, 9805), (2173, 9620), (2405, 8692), (2665, 7844), (2756, 7585), (3034, 6890), (3445, 6068), (3922, 5330), (4346, 4810)]