20005308

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{653}}^1$

素因数の和:723

約数の個数: 72

約数和(自身を含む): 54276768

約数和(自身を除く): 34271460

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 37, 46, 69, 74, 92, 111, 138, 148, 207, 222, 276, 333, 414, 444, 653, 666, 828, 851, 1306, 1332, 1702, 1959, 2553, 2612, 3404, 3918, 5106, 5877, 7659, 7836, 10212, 11754, 15019, 15318, 23508, 24161, 30038, 30636, 45057, 48322, 60076, 72483, 90114, 96644, 135171, 144966, 180228, 217449, 270342, 289932, 434898, 540684, 555703, 869796, 1111406, 1667109, 2222812, 3334218, 5001327, 6668436, 10002654, 20005308]

約数ペア:

[(1, 20005308), (2, 10002654), (3, 6668436), (4, 5001327), (6, 3334218), (9, 2222812), (12, 1667109), (18, 1111406), (23, 869796), (36, 555703), (37, 540684), (46, 434898), (69, 289932), (74, 270342), (92, 217449), (111, 180228), (138, 144966), (148, 135171), (207, 96644), (222, 90114), (276, 72483), (333, 60076), (414, 48322), (444, 45057), (653, 30636), (666, 30038), (828, 24161), (851, 23508), (1306, 15318), (1332, 15019), (1702, 11754), (1959, 10212), (2553, 7836), (2612, 7659), (3404, 5877), (3918, 5106)]