18100280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1327}}^1$

素因数の和:1380

約数の個数: 64

約数和(自身を含む): 45895680

約数和(自身を除く): 27795400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1327, 1364, 1705, 2654, 2728, 3410, 5308, 6635, 6820, 10616, 13270, 13640, 14597, 26540, 29194, 41137, 53080, 58388, 72985, 82274, 116776, 145970, 164548, 205685, 291940, 329096, 411370, 452507, 583880, 822740, 905014, 1645480, 1810028, 2262535, 3620056, 4525070, 9050140, 18100280]

約数ペア:

[(1, 18100280), (2, 9050140), (4, 4525070), (5, 3620056), (8, 2262535), (10, 1810028), (11, 1645480), (20, 905014), (22, 822740), (31, 583880), (40, 452507), (44, 411370), (55, 329096), (62, 291940), (88, 205685), (110, 164548), (124, 145970), (155, 116776), (220, 82274), (248, 72985), (310, 58388), (341, 53080), (440, 41137), (620, 29194), (682, 26540), (1240, 14597), (1327, 13640), (1364, 13270), (1705, 10616), (2654, 6820), (2728, 6635), (3410, 5308)]