20969040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2131}}^1$

素因数の和:2188

約数の個数: 80

約数和(自身を含む): 66620736

約数和(自身を除く): 45651696

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 41, 48, 60, 80, 82, 120, 123, 164, 205, 240, 246, 328, 410, 492, 615, 656, 820, 984, 1230, 1640, 1968, 2131, 2460, 3280, 4262, 4920, 6393, 8524, 9840, 10655, 12786, 17048, 21310, 25572, 31965, 34096, 42620, 51144, 63930, 85240, 87371, 102288, 127860, 170480, 174742, 255720, 262113, 349484, 436855, 511440, 524226, 698968, 873710, 1048452, 1310565, 1397936, 1747420, 2096904, 2621130, 3494840, 4193808, 5242260, 6989680, 10484520, 20969040]

約数ペア:

[(1, 20969040), (2, 10484520), (3, 6989680), (4, 5242260), (5, 4193808), (6, 3494840), (8, 2621130), (10, 2096904), (12, 1747420), (15, 1397936), (16, 1310565), (20, 1048452), (24, 873710), (30, 698968), (40, 524226), (41, 511440), (48, 436855), (60, 349484), (80, 262113), (82, 255720), (120, 174742), (123, 170480), (164, 127860), (205, 102288), (240, 87371), (246, 85240), (328, 63930), (410, 51144), (492, 42620), (615, 34096), (656, 31965), (820, 25572), (984, 21310), (1230, 17048), (1640, 12786), (1968, 10655), (2131, 9840), (2460, 8524), (3280, 6393), (4262, 4920)]