20760080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{761}}^1$

素因数の和:816

約数の個数: 80

約数和(自身を含む): 54425088

約数和(自身を除く): 33665008

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 110, 124, 155, 176, 220, 248, 310, 341, 440, 496, 620, 682, 761, 880, 1240, 1364, 1522, 1705, 2480, 2728, 3044, 3410, 3805, 5456, 6088, 6820, 7610, 8371, 12176, 13640, 15220, 16742, 23591, 27280, 30440, 33484, 41855, 47182, 60880, 66968, 83710, 94364, 117955, 133936, 167420, 188728, 235910, 259501, 334840, 377456, 471820, 519002, 669680, 943640, 1038004, 1297505, 1887280, 2076008, 2595010, 4152016, 5190020, 10380040, 20760080]

約数ペア:

[(1, 20760080), (2, 10380040), (4, 5190020), (5, 4152016), (8, 2595010), (10, 2076008), (11, 1887280), (16, 1297505), (20, 1038004), (22, 943640), (31, 669680), (40, 519002), (44, 471820), (55, 377456), (62, 334840), (80, 259501), (88, 235910), (110, 188728), (124, 167420), (155, 133936), (176, 117955), (220, 94364), (248, 83710), (310, 66968), (341, 60880), (440, 47182), (496, 41855), (620, 33484), (682, 30440), (761, 27280), (880, 23591), (1240, 16742), (1364, 15220), (1522, 13640), (1705, 12176), (2480, 8371), (2728, 7610), (3044, 6820), (3410, 6088), (3805, 5456)]