666996980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{19583}}^1$

素因数の和:19736

約数の個数: 48

約数和(自身を含む): 1520031744

約数和(自身を除く): 853034764

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 131, 260, 262, 524, 655, 1310, 1703, 2620, 3406, 6812, 8515, 17030, 19583, 34060, 39166, 78332, 97915, 195830, 254579, 391660, 509158, 1018316, 1272895, 2545790, 2565373, 5091580, 5130746, 10261492, 12826865, 25653730, 33349849, 51307460, 66699698, 133399396, 166749245, 333498490, 666996980]

約数ペア:

[(1, 666996980), (2, 333498490), (4, 166749245), (5, 133399396), (10, 66699698), (13, 51307460), (20, 33349849), (26, 25653730), (52, 12826865), (65, 10261492), (130, 5130746), (131, 5091580), (260, 2565373), (262, 2545790), (524, 1272895), (655, 1018316), (1310, 509158), (1703, 391660), (2620, 254579), (3406, 195830), (6812, 97915), (8515, 78332), (17030, 39166), (19583, 34060)]