20458980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{173}}^1$

素因数の和:267

約数の個数: 120

約数和(自身を含む): 65435832

約数和(自身を除く): 44976852

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 73, 81, 90, 108, 135, 146, 162, 173, 180, 219, 270, 292, 324, 346, 365, 405, 438, 519, 540, 657, 692, 730, 810, 865, 876, 1038, 1095, 1314, 1460, 1557, 1620, 1730, 1971, 2076, 2190, 2595, 2628, 3114, 3285, 3460, 3942, 4380, 4671, 5190, 5913, 6228, 6570, 7785, 7884, 9342, 9855, 10380, 11826, 12629, 13140, 14013, 15570, 18684, 19710, 23355, 23652, 25258, 28026, 29565, 31140, 37887, 39420, 46710, 50516, 56052, 59130, 63145, 70065, 75774, 93420, 113661, 118260, 126290, 140130, 151548, 189435, 227322, 252580, 280260, 340983, 378870, 454644, 568305, 681966, 757740, 1022949, 1136610, 1363932, 1704915, 2045898, 2273220, 3409830, 4091796, 5114745, 6819660, 10229490, 20458980]

約数ペア:

[(1, 20458980), (2, 10229490), (3, 6819660), (4, 5114745), (5, 4091796), (6, 3409830), (9, 2273220), (10, 2045898), (12, 1704915), (15, 1363932), (18, 1136610), (20, 1022949), (27, 757740), (30, 681966), (36, 568305), (45, 454644), (54, 378870), (60, 340983), (73, 280260), (81, 252580), (90, 227322), (108, 189435), (135, 151548), (146, 140130), (162, 126290), (173, 118260), (180, 113661), (219, 93420), (270, 75774), (292, 70065), (324, 63145), (346, 59130), (365, 56052), (405, 50516), (438, 46710), (519, 39420), (540, 37887), (657, 31140), (692, 29565), (730, 28026), (810, 25258), (865, 23652), (876, 23355), (1038, 19710), (1095, 18684), (1314, 15570), (1460, 14013), (1557, 13140), (1620, 12629), (1730, 11826), (1971, 10380), (2076, 9855), (2190, 9342), (2595, 7884), (2628, 7785), (3114, 6570), (3285, 6228), (3460, 5913), (3942, 5190), (4380, 4671)]