1998371988

素因数分解:

$2^2\times 3^2\times {\mathrm{131}}^1\times {\mathrm{157}}^1\times {\mathrm{2699}}^1$

素因数の和:2997

約数の個数: 72

約数和(自身を含む): 5124319200

約数和(自身を除く): 3125947212

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 131, 157, 262, 314, 393, 471, 524, 628, 786, 942, 1179, 1413, 1572, 1884, 2358, 2699, 2826, 4716, 5398, 5652, 8097, 10796, 16194, 20567, 24291, 32388, 41134, 48582, 61701, 82268, 97164, 123402, 185103, 246804, 353569, 370206, 423743, 707138, 740412, 847486, 1060707, 1271229, 1414276, 1694972, 2121414, 2542458, 3182121, 3813687, 4242828, 5084916, 6364242, 7627374, 12728484, 15254748, 55510333, 111020666, 166530999, 222041332, 333061998, 499592997, 666123996, 999185994, 1998371988]

約数ペア:

[(1, 1998371988), (2, 999185994), (3, 666123996), (4, 499592997), (6, 333061998), (9, 222041332), (12, 166530999), (18, 111020666), (36, 55510333), (131, 15254748), (157, 12728484), (262, 7627374), (314, 6364242), (393, 5084916), (471, 4242828), (524, 3813687), (628, 3182121), (786, 2542458), (942, 2121414), (1179, 1694972), (1413, 1414276), (1572, 1271229), (1884, 1060707), (2358, 847486), (2699, 740412), (2826, 707138), (4716, 423743), (5398, 370206), (5652, 353569), (8097, 246804), (10796, 185103), (16194, 123402), (20567, 97164), (24291, 82268), (32388, 61701), (41134, 48582)]