20165648750

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{9473}}^1$

素因数の和:9639

約数の個数: 80

約数和(自身を含む): 41021131536

約数和(自身を除く): 20855482786

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 131, 250, 262, 325, 625, 650, 655, 1250, 1310, 1625, 1703, 3250, 3275, 3406, 6550, 8125, 8515, 9473, 16250, 16375, 17030, 18946, 32750, 42575, 47365, 81875, 85150, 94730, 123149, 163750, 212875, 236825, 246298, 425750, 473650, 615745, 1064375, 1184125, 1231490, 1240963, 2128750, 2368250, 2481926, 3078725, 5920625, 6157450, 6204815, 11841250, 12409630, 15393625, 16132519, 30787250, 31024075, 32265038, 62048150, 76968125, 80662595, 153936250, 155120375, 161325190, 310240750, 403312975, 775601875, 806625950, 1551203750, 2016564875, 4033129750, 10082824375, 20165648750]

約数ペア:

[(1, 20165648750), (2, 10082824375), (5, 4033129750), (10, 2016564875), (13, 1551203750), (25, 806625950), (26, 775601875), (50, 403312975), (65, 310240750), (125, 161325190), (130, 155120375), (131, 153936250), (250, 80662595), (262, 76968125), (325, 62048150), (625, 32265038), (650, 31024075), (655, 30787250), (1250, 16132519), (1310, 15393625), (1625, 12409630), (1703, 11841250), (3250, 6204815), (3275, 6157450), (3406, 5920625), (6550, 3078725), (8125, 2481926), (8515, 2368250), (9473, 2128750), (16250, 1240963), (16375, 1231490), (17030, 1184125), (18946, 1064375), (32750, 615745), (42575, 473650), (47365, 425750), (81875, 246298), (85150, 236825), (94730, 212875), (123149, 163750)]