20122800

素因数分解:

$2^4\times 3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{409}}^1$

素因数の和:471

約数の個数: 120

約数和(自身を含む): 66193680

約数和(自身を除く): 46070880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 40, 41, 48, 50, 60, 75, 80, 82, 100, 120, 123, 150, 164, 200, 205, 240, 246, 300, 328, 400, 409, 410, 492, 600, 615, 656, 818, 820, 984, 1025, 1200, 1227, 1230, 1636, 1640, 1968, 2045, 2050, 2454, 2460, 3075, 3272, 3280, 4090, 4100, 4908, 4920, 6135, 6150, 6544, 8180, 8200, 9816, 9840, 10225, 12270, 12300, 16360, 16400, 16769, 19632, 20450, 24540, 24600, 30675, 32720, 33538, 40900, 49080, 49200, 50307, 61350, 67076, 81800, 83845, 98160, 100614, 122700, 134152, 163600, 167690, 201228, 245400, 251535, 268304, 335380, 402456, 419225, 490800, 503070, 670760, 804912, 838450, 1006140, 1257675, 1341520, 1676900, 2012280, 2515350, 3353800, 4024560, 5030700, 6707600, 10061400, 20122800]

約数ペア:

[(1, 20122800), (2, 10061400), (3, 6707600), (4, 5030700), (5, 4024560), (6, 3353800), (8, 2515350), (10, 2012280), (12, 1676900), (15, 1341520), (16, 1257675), (20, 1006140), (24, 838450), (25, 804912), (30, 670760), (40, 503070), (41, 490800), (48, 419225), (50, 402456), (60, 335380), (75, 268304), (80, 251535), (82, 245400), (100, 201228), (120, 167690), (123, 163600), (150, 134152), (164, 122700), (200, 100614), (205, 98160), (240, 83845), (246, 81800), (300, 67076), (328, 61350), (400, 50307), (409, 49200), (410, 49080), (492, 40900), (600, 33538), (615, 32720), (656, 30675), (818, 24600), (820, 24540), (984, 20450), (1025, 19632), (1200, 16769), (1227, 16400), (1230, 16360), (1636, 12300), (1640, 12270), (1968, 10225), (2045, 9840), (2050, 9816), (2454, 8200), (2460, 8180), (3075, 6544), (3272, 6150), (3280, 6135), (4090, 4920), (4100, 4908)]