80820100

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^2\times {\mathrm{31}}^2$

素因数の和:134

約数の個数: 81

約数和(自身を含む): 187683951

約数和(自身を除く): 106863851

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 31, 50, 58, 62, 100, 116, 124, 145, 155, 290, 310, 580, 620, 725, 775, 841, 899, 961, 1450, 1550, 1682, 1798, 1922, 2900, 3100, 3364, 3596, 3844, 4205, 4495, 4805, 8410, 8990, 9610, 16820, 17980, 19220, 21025, 22475, 24025, 26071, 27869, 42050, 44950, 48050, 52142, 55738, 84100, 89900, 96100, 104284, 111476, 130355, 139345, 260710, 278690, 521420, 557380, 651775, 696725, 808201, 1303550, 1393450, 1616402, 2607100, 2786900, 3232804, 4041005, 8082010, 16164020, 20205025, 40410050, 80820100]

約数ペア:

[(1, 80820100), (2, 40410050), (4, 20205025), (5, 16164020), (10, 8082010), (20, 4041005), (25, 3232804), (29, 2786900), (31, 2607100), (50, 1616402), (58, 1393450), (62, 1303550), (100, 808201), (116, 696725), (124, 651775), (145, 557380), (155, 521420), (290, 278690), (310, 260710), (580, 139345), (620, 130355), (725, 111476), (775, 104284), (841, 96100), (899, 89900), (961, 84100), (1450, 55738), (1550, 52142), (1682, 48050), (1798, 44950), (1922, 42050), (2900, 27869), (3100, 26071), (3364, 24025), (3596, 22475), (3844, 21025), (4205, 19220), (4495, 17980), (4805, 16820), (8410, 9610)]