31800015

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2861}}^1$

素因数の和:2904

約数の個数: 48

約数和(自身を含む): 62506080

約数和(自身を除く): 30706065

約数列:

[1, 3, 5, 9, 13, 15, 19, 39, 45, 57, 65, 95, 117, 171, 195, 247, 285, 585, 741, 855, 1235, 2223, 2861, 3705, 8583, 11115, 14305, 25749, 37193, 42915, 54359, 111579, 128745, 163077, 185965, 271795, 334737, 489231, 557895, 706667, 815385, 1673685, 2120001, 2446155, 3533335, 6360003, 10600005, 31800015]

約数ペア:

[(1, 31800015), (3, 10600005), (5, 6360003), (9, 3533335), (13, 2446155), (15, 2120001), (19, 1673685), (39, 815385), (45, 706667), (57, 557895), (65, 489231), (95, 334737), (117, 271795), (171, 185965), (195, 163077), (247, 128745), (285, 111579), (585, 54359), (741, 42915), (855, 37193), (1235, 25749), (2223, 14305), (2861, 11115), (3705, 8583)]