20543380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{653}}^1$

素因数の和:697

約数の個数: 72

約数和(自身を含む): 51145416

約数和(自身を除く): 30602036

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 121, 130, 143, 220, 242, 260, 286, 484, 572, 605, 653, 715, 1210, 1306, 1430, 1573, 2420, 2612, 2860, 3146, 3265, 6292, 6530, 7183, 7865, 8489, 13060, 14366, 15730, 16978, 28732, 31460, 33956, 35915, 42445, 71830, 79013, 84890, 93379, 143660, 158026, 169780, 186758, 316052, 373516, 395065, 466895, 790130, 933790, 1027169, 1580260, 1867580, 2054338, 4108676, 5135845, 10271690, 20543380]

約数ペア:

[(1, 20543380), (2, 10271690), (4, 5135845), (5, 4108676), (10, 2054338), (11, 1867580), (13, 1580260), (20, 1027169), (22, 933790), (26, 790130), (44, 466895), (52, 395065), (55, 373516), (65, 316052), (110, 186758), (121, 169780), (130, 158026), (143, 143660), (220, 93379), (242, 84890), (260, 79013), (286, 71830), (484, 42445), (572, 35915), (605, 33956), (653, 31460), (715, 28732), (1210, 16978), (1306, 15730), (1430, 14366), (1573, 13060), (2420, 8489), (2612, 7865), (2860, 7183), (3146, 6530), (3265, 6292)]