20121856251

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{379}}^1\times {\mathrm{1171}}^1$

素因数の和:1704

約数の個数: 64

約数和(自身を含む): 32835502080

約数和(自身を除く): 12713645829

約数列:

[1, 3, 7, 17, 21, 51, 119, 127, 357, 379, 381, 889, 1137, 1171, 2159, 2653, 2667, 3513, 6443, 6477, 7959, 8197, 15113, 19329, 19907, 24591, 45101, 45339, 48133, 59721, 135303, 139349, 144399, 148717, 336931, 418047, 443809, 446151, 818261, 1010793, 1041019, 1331427, 2454783, 2528189, 3106663, 3123057, 5727827, 7544753, 7584567, 9319989, 17183481, 17697323, 22634259, 52813271, 53091969, 56363743, 158439813, 169091229, 394546201, 958183631, 1183638603, 2874550893, 6707285417, 20121856251]

約数ペア:

[(1, 20121856251), (3, 6707285417), (7, 2874550893), (17, 1183638603), (21, 958183631), (51, 394546201), (119, 169091229), (127, 158439813), (357, 56363743), (379, 53091969), (381, 52813271), (889, 22634259), (1137, 17697323), (1171, 17183481), (2159, 9319989), (2653, 7584567), (2667, 7544753), (3513, 5727827), (6443, 3123057), (6477, 3106663), (7959, 2528189), (8197, 2454783), (15113, 1331427), (19329, 1041019), (19907, 1010793), (24591, 818261), (45101, 446151), (45339, 443809), (48133, 418047), (59721, 336931), (135303, 148717), (139349, 144399)]