20602920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{281}}^1$

素因数の和:355

約数の個数: 128

約数和(自身を含む): 68221440

約数和(自身を除く): 47618520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 47, 52, 60, 65, 78, 94, 104, 120, 130, 141, 156, 188, 195, 235, 260, 281, 282, 312, 376, 390, 470, 520, 562, 564, 611, 705, 780, 843, 940, 1124, 1128, 1222, 1405, 1410, 1560, 1686, 1833, 1880, 2248, 2444, 2810, 2820, 3055, 3372, 3653, 3666, 4215, 4888, 5620, 5640, 6110, 6744, 7306, 7332, 8430, 9165, 10959, 11240, 12220, 13207, 14612, 14664, 16860, 18265, 18330, 21918, 24440, 26414, 29224, 33720, 36530, 36660, 39621, 43836, 52828, 54795, 66035, 73060, 73320, 79242, 87672, 105656, 109590, 132070, 146120, 158484, 171691, 198105, 219180, 264140, 316968, 343382, 396210, 438360, 515073, 528280, 686764, 792420, 858455, 1030146, 1373528, 1584840, 1716910, 2060292, 2575365, 3433820, 4120584, 5150730, 6867640, 10301460, 20602920]

約数ペア:

[(1, 20602920), (2, 10301460), (3, 6867640), (4, 5150730), (5, 4120584), (6, 3433820), (8, 2575365), (10, 2060292), (12, 1716910), (13, 1584840), (15, 1373528), (20, 1030146), (24, 858455), (26, 792420), (30, 686764), (39, 528280), (40, 515073), (47, 438360), (52, 396210), (60, 343382), (65, 316968), (78, 264140), (94, 219180), (104, 198105), (120, 171691), (130, 158484), (141, 146120), (156, 132070), (188, 109590), (195, 105656), (235, 87672), (260, 79242), (281, 73320), (282, 73060), (312, 66035), (376, 54795), (390, 52828), (470, 43836), (520, 39621), (562, 36660), (564, 36530), (611, 33720), (705, 29224), (780, 26414), (843, 24440), (940, 21918), (1124, 18330), (1128, 18265), (1222, 16860), (1405, 14664), (1410, 14612), (1560, 13207), (1686, 12220), (1833, 11240), (1880, 10959), (2248, 9165), (2444, 8430), (2810, 7332), (2820, 7306), (3055, 6744), (3372, 6110), (3653, 5640), (3666, 5620), (4215, 4888)]