21000201642

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{211}}^1\times {\mathrm{251}}^1\times {\mathrm{1049}}^1$

素因数の和:1529

約数の個数: 128

約数和(自身を含む): 53851392000

約数和(自身を除く): 32851190358

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 189, 211, 251, 378, 422, 502, 633, 753, 1049, 1266, 1477, 1506, 1757, 1899, 2098, 2259, 2954, 3147, 3514, 3798, 4431, 4518, 5271, 5697, 6294, 6777, 7343, 8862, 9441, 10542, 11394, 13293, 13554, 14686, 15813, 18882, 22029, 26586, 28323, 31626, 39879, 44058, 47439, 52961, 56646, 66087, 79758, 94878, 105922, 132174, 158883, 198261, 221339, 263299, 317766, 370727, 396522, 442678, 476649, 526598, 664017, 741454, 789897, 953298, 1112181, 1328034, 1429947, 1549373, 1579794, 1843093, 1992051, 2224362, 2369691, 2859894, 3098746, 3336543, 3686186, 3984102, 4648119, 4739382, 5529279, 5976153, 6673086, 7109073, 9296238, 10009629, 11058558, 11952306, 13944357, 14218146, 16587837, 20019258, 27888714, 33175674, 41833071, 49763511, 55556089, 83666142, 99527022, 111112178, 166668267, 333336534, 388892623, 500004801, 777785246, 1000009602, 1166677869, 1500014403, 2333355738, 3000028806, 3500033607, 7000067214, 10500100821, 21000201642]

約数ペア:

[(1, 21000201642), (2, 10500100821), (3, 7000067214), (6, 3500033607), (7, 3000028806), (9, 2333355738), (14, 1500014403), (18, 1166677869), (21, 1000009602), (27, 777785246), (42, 500004801), (54, 388892623), (63, 333336534), (126, 166668267), (189, 111112178), (211, 99527022), (251, 83666142), (378, 55556089), (422, 49763511), (502, 41833071), (633, 33175674), (753, 27888714), (1049, 20019258), (1266, 16587837), (1477, 14218146), (1506, 13944357), (1757, 11952306), (1899, 11058558), (2098, 10009629), (2259, 9296238), (2954, 7109073), (3147, 6673086), (3514, 5976153), (3798, 5529279), (4431, 4739382), (4518, 4648119), (5271, 3984102), (5697, 3686186), (6294, 3336543), (6777, 3098746), (7343, 2859894), (8862, 2369691), (9441, 2224362), (10542, 1992051), (11394, 1843093), (13293, 1579794), (13554, 1549373), (14686, 1429947), (15813, 1328034), (18882, 1112181), (22029, 953298), (26586, 789897), (28323, 741454), (31626, 664017), (39879, 526598), (44058, 476649), (47439, 442678), (52961, 396522), (56646, 370727), (66087, 317766), (79758, 263299), (94878, 221339), (105922, 198261), (132174, 158883)]