20996878568

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1907}}^1\times {\mathrm{4261}}^1$

素因数の和:6210

約数の個数: 64

約数和(自身を含む): 43912238400

約数和(自身を除く): 22915359832

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 646, 1292, 1907, 2584, 3814, 4261, 7628, 8522, 15256, 17044, 32419, 34088, 36233, 64838, 72437, 72466, 80959, 129676, 144874, 144932, 161918, 259352, 289748, 289864, 323836, 579496, 615961, 647672, 1231922, 1376303, 2463844, 2752606, 4927688, 5505212, 8125727, 11010424, 16251454, 32502908, 65005816, 138137359, 154388813, 276274718, 308777626, 552549436, 617555252, 1105098872, 1235110504, 2624609821, 5249219642, 10498439284, 20996878568]

約数ペア:

[(1, 20996878568), (2, 10498439284), (4, 5249219642), (8, 2624609821), (17, 1235110504), (19, 1105098872), (34, 617555252), (38, 552549436), (68, 308777626), (76, 276274718), (136, 154388813), (152, 138137359), (323, 65005816), (646, 32502908), (1292, 16251454), (1907, 11010424), (2584, 8125727), (3814, 5505212), (4261, 4927688), (7628, 2752606), (8522, 2463844), (15256, 1376303), (17044, 1231922), (32419, 647672), (34088, 615961), (36233, 579496), (64838, 323836), (72437, 289864), (72466, 289748), (80959, 259352), (129676, 161918), (144874, 144932)]