20555340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{73}}^1$

素因数の和:136

約数の個数: 144

約数和(自身を含む): 66312288

約数和(自身を除く): 45756948

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 19, 20, 26, 30, 38, 39, 52, 57, 60, 65, 73, 76, 78, 95, 114, 130, 146, 156, 190, 195, 219, 228, 247, 260, 285, 292, 361, 365, 380, 390, 438, 494, 570, 722, 730, 741, 780, 876, 949, 988, 1083, 1095, 1140, 1235, 1387, 1444, 1460, 1482, 1805, 1898, 2166, 2190, 2470, 2774, 2847, 2964, 3610, 3705, 3796, 4161, 4332, 4380, 4693, 4745, 4940, 5415, 5548, 5694, 6935, 7220, 7410, 8322, 9386, 9490, 10830, 11388, 13870, 14079, 14235, 14820, 16644, 18031, 18772, 18980, 20805, 21660, 23465, 26353, 27740, 28158, 28470, 36062, 41610, 46930, 52706, 54093, 56316, 56940, 70395, 72124, 79059, 83220, 90155, 93860, 105412, 108186, 131765, 140790, 158118, 180310, 216372, 263530, 270465, 281580, 316236, 342589, 360620, 395295, 527060, 540930, 685178, 790590, 1027767, 1081860, 1370356, 1581180, 1712945, 2055534, 3425890, 4111068, 5138835, 6851780, 10277670, 20555340]

約数ペア:

[(1, 20555340), (2, 10277670), (3, 6851780), (4, 5138835), (5, 4111068), (6, 3425890), (10, 2055534), (12, 1712945), (13, 1581180), (15, 1370356), (19, 1081860), (20, 1027767), (26, 790590), (30, 685178), (38, 540930), (39, 527060), (52, 395295), (57, 360620), (60, 342589), (65, 316236), (73, 281580), (76, 270465), (78, 263530), (95, 216372), (114, 180310), (130, 158118), (146, 140790), (156, 131765), (190, 108186), (195, 105412), (219, 93860), (228, 90155), (247, 83220), (260, 79059), (285, 72124), (292, 70395), (361, 56940), (365, 56316), (380, 54093), (390, 52706), (438, 46930), (494, 41610), (570, 36062), (722, 28470), (730, 28158), (741, 27740), (780, 26353), (876, 23465), (949, 21660), (988, 20805), (1083, 18980), (1095, 18772), (1140, 18031), (1235, 16644), (1387, 14820), (1444, 14235), (1460, 14079), (1482, 13870), (1805, 11388), (1898, 10830), (2166, 9490), (2190, 9386), (2470, 8322), (2774, 7410), (2847, 7220), (2964, 6935), (3610, 5694), (3705, 5548), (3796, 5415), (4161, 4940), (4332, 4745), (4380, 4693)]