About the Number

2121760980

2121760979 ← → 2121760981

2進数表記:1111110011101111000000011010100

漢数字表記:二十一億二千百七十六万九百八十

素因数分解:

2 2 × 3 4 × 5 1 × 1109 1 × 1181 1

素因数の和:2311
約数の個数: 120
約数和(自身を含む): 6667685640
約数和(自身を除く): 4545924660

約数列:
[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1109, 1181, 1620, 2218, 2362, 3327, 3543, 4436, 4724, 5545, 5905, 6654, 7086, 9981, 10629, 11090, 11810, 13308, 14172, 16635, 17715, 19962, 21258, 22180, 23620, 29943, 31887, 33270, 35430, 39924, 42516, 49905, 53145, 59886, 63774, 66540, 70860, 89829, 95661, 99810, 106290, 119772, 127548, 149715, 159435, 179658, 191322, 199620, 212580, 299430, 318870, 359316, 382644, 449145, 478305, 598860, 637740, 898290, 956610, 1309729, 1796580, 1913220, 2619458, 3929187, 5238916, 6548645, 7858374, 11787561, 13097290, 15716748, 19645935, 23575122, 26194580, 35362683, 39291870, 47150244, 58937805, 70725366, 78583740, 106088049, 117875610, 141450732, 176813415, 212176098, 235751220, 353626830, 424352196, 530440245, 707253660, 1060880490, 2121760980]

約数ペア:
[(1, 2121760980), (2, 1060880490), (3, 707253660), (4, 530440245), (5, 424352196), (6, 353626830), (9, 235751220), (10, 212176098), (12, 176813415), (15, 141450732), (18, 117875610), (20, 106088049), (27, 78583740), (30, 70725366), (36, 58937805), (45, 47150244), (54, 39291870), (60, 35362683), (81, 26194580), (90, 23575122), (108, 19645935), (135, 15716748), (162, 13097290), (180, 11787561), (270, 7858374), (324, 6548645), (405, 5238916), (540, 3929187), (810, 2619458), (1109, 1913220), (1181, 1796580), (1620, 1309729), (2218, 956610), (2362, 898290), (3327, 637740), (3543, 598860), (4436, 478305), (4724, 449145), (5545, 382644), (5905, 359316), (6654, 318870), (7086, 299430), (9981, 212580), (10629, 199620), (11090, 191322), (11810, 179658), (13308, 159435), (14172, 149715), (16635, 127548), (17715, 119772), (19962, 106290), (21258, 99810), (22180, 95661), (23620, 89829), (29943, 70860), (31887, 66540), (33270, 63774), (35430, 59886), (39924, 53145), (42516, 49905)]

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