18917595

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 34504704

約数和(自身を除く): 15587109

約数列:

[1, 3, 5, 9, 15, 31, 45, 71, 93, 155, 191, 213, 279, 355, 465, 573, 639, 955, 1065, 1395, 1719, 2201, 2865, 3195, 5921, 6603, 8595, 11005, 13561, 17763, 19809, 29605, 33015, 40683, 53289, 67805, 88815, 99045, 122049, 203415, 266445, 420391, 610245, 1261173, 2101955, 3783519, 6305865, 18917595]

約数ペア:

[(1, 18917595), (3, 6305865), (5, 3783519), (9, 2101955), (15, 1261173), (31, 610245), (45, 420391), (71, 266445), (93, 203415), (155, 122049), (191, 99045), (213, 88815), (279, 67805), (355, 53289), (465, 40683), (573, 33015), (639, 29605), (955, 19809), (1065, 17763), (1395, 13561), (1719, 11005), (2201, 8595), (2865, 6603), (3195, 5921)]