21531840

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2039}}^1$

素因数の和:2070

約数の個数: 112

約数和(自身を含む): 74615040

約数和(自身を除く): 53083200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 64, 66, 80, 88, 96, 110, 120, 132, 160, 165, 176, 192, 220, 240, 264, 320, 330, 352, 440, 480, 528, 660, 704, 880, 960, 1056, 1320, 1760, 2039, 2112, 2640, 3520, 4078, 5280, 6117, 8156, 10195, 10560, 12234, 16312, 20390, 22429, 24468, 30585, 32624, 40780, 44858, 48936, 61170, 65248, 67287, 81560, 89716, 97872, 112145, 122340, 130496, 134574, 163120, 179432, 195744, 224290, 244680, 269148, 326240, 336435, 358864, 391488, 448580, 489360, 538296, 652480, 672870, 717728, 897160, 978720, 1076592, 1345740, 1435456, 1794320, 1957440, 2153184, 2691480, 3588640, 4306368, 5382960, 7177280, 10765920, 21531840]

約数ペア:

[(1, 21531840), (2, 10765920), (3, 7177280), (4, 5382960), (5, 4306368), (6, 3588640), (8, 2691480), (10, 2153184), (11, 1957440), (12, 1794320), (15, 1435456), (16, 1345740), (20, 1076592), (22, 978720), (24, 897160), (30, 717728), (32, 672870), (33, 652480), (40, 538296), (44, 489360), (48, 448580), (55, 391488), (60, 358864), (64, 336435), (66, 326240), (80, 269148), (88, 244680), (96, 224290), (110, 195744), (120, 179432), (132, 163120), (160, 134574), (165, 130496), (176, 122340), (192, 112145), (220, 97872), (240, 89716), (264, 81560), (320, 67287), (330, 65248), (352, 61170), (440, 48936), (480, 44858), (528, 40780), (660, 32624), (704, 30585), (880, 24468), (960, 22429), (1056, 20390), (1320, 16312), (1760, 12234), (2039, 10560), (2112, 10195), (2640, 8156), (3520, 6117), (4078, 5280)]