20215214901

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{311}}^1\times {\mathrm{787}}^1$

素因数の和:1156

約数の個数: 128

約数和(自身を含む): 37763481600

約数和(自身を除く): 17548266699

約数列:

[1, 3, 7, 9, 19, 21, 23, 27, 57, 63, 69, 133, 161, 171, 189, 207, 311, 399, 437, 483, 513, 621, 787, 933, 1197, 1311, 1449, 2177, 2361, 2799, 3059, 3591, 3933, 4347, 5509, 5909, 6531, 7083, 7153, 8397, 9177, 11799, 14953, 16527, 17727, 18101, 19593, 21249, 21459, 27531, 41363, 44859, 49581, 50071, 53181, 54303, 58779, 64377, 82593, 104671, 124089, 126707, 134577, 135907, 148743, 150213, 159543, 162909, 193131, 244757, 314013, 343919, 372267, 380121, 403731, 407721, 450639, 488727, 734271, 942039, 951349, 1031757, 1116801, 1140363, 1223163, 1351917, 1713299, 2202813, 2407433, 2826117, 2854047, 3095271, 3421089, 3669489, 4650383, 5139897, 5629411, 6608439, 7222299, 8562141, 9285813, 13951149, 15419691, 16888233, 21666897, 25686423, 32552681, 39405877, 41853447, 46259073, 50664699, 65000691, 97658043, 106958809, 118217631, 125560341, 151994097, 292974129, 320876427, 354652893, 748711663, 878922387, 962629281, 1063958679, 2246134989, 2887887843, 6738404967, 20215214901]

約数ペア:

[(1, 20215214901), (3, 6738404967), (7, 2887887843), (9, 2246134989), (19, 1063958679), (21, 962629281), (23, 878922387), (27, 748711663), (57, 354652893), (63, 320876427), (69, 292974129), (133, 151994097), (161, 125560341), (171, 118217631), (189, 106958809), (207, 97658043), (311, 65000691), (399, 50664699), (437, 46259073), (483, 41853447), (513, 39405877), (621, 32552681), (787, 25686423), (933, 21666897), (1197, 16888233), (1311, 15419691), (1449, 13951149), (2177, 9285813), (2361, 8562141), (2799, 7222299), (3059, 6608439), (3591, 5629411), (3933, 5139897), (4347, 4650383), (5509, 3669489), (5909, 3421089), (6531, 3095271), (7083, 2854047), (7153, 2826117), (8397, 2407433), (9177, 2202813), (11799, 1713299), (14953, 1351917), (16527, 1223163), (17727, 1140363), (18101, 1116801), (19593, 1031757), (21249, 951349), (21459, 942039), (27531, 734271), (41363, 488727), (44859, 450639), (49581, 407721), (50071, 403731), (53181, 380121), (54303, 372267), (58779, 343919), (64377, 314013), (82593, 244757), (104671, 193131), (124089, 162909), (126707, 159543), (134577, 150213), (135907, 148743)]