21432840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1249}}^1$

素因数の和:1287

約数の個数: 128

約数和(自身を含む): 75600000

約数和(自身を除く): 54167160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 20, 22, 24, 26, 30, 33, 39, 40, 44, 52, 55, 60, 65, 66, 78, 88, 104, 110, 120, 130, 132, 143, 156, 165, 195, 220, 260, 264, 286, 312, 330, 390, 429, 440, 520, 572, 660, 715, 780, 858, 1144, 1249, 1320, 1430, 1560, 1716, 2145, 2498, 2860, 3432, 3747, 4290, 4996, 5720, 6245, 7494, 8580, 9992, 12490, 13739, 14988, 16237, 17160, 18735, 24980, 27478, 29976, 32474, 37470, 41217, 48711, 49960, 54956, 64948, 68695, 74940, 81185, 82434, 97422, 109912, 129896, 137390, 149880, 162370, 164868, 178607, 194844, 206085, 243555, 274780, 324740, 329736, 357214, 389688, 412170, 487110, 535821, 549560, 649480, 714428, 824340, 893035, 974220, 1071642, 1428856, 1648680, 1786070, 1948440, 2143284, 2679105, 3572140, 4286568, 5358210, 7144280, 10716420, 21432840]

約数ペア:

[(1, 21432840), (2, 10716420), (3, 7144280), (4, 5358210), (5, 4286568), (6, 3572140), (8, 2679105), (10, 2143284), (11, 1948440), (12, 1786070), (13, 1648680), (15, 1428856), (20, 1071642), (22, 974220), (24, 893035), (26, 824340), (30, 714428), (33, 649480), (39, 549560), (40, 535821), (44, 487110), (52, 412170), (55, 389688), (60, 357214), (65, 329736), (66, 324740), (78, 274780), (88, 243555), (104, 206085), (110, 194844), (120, 178607), (130, 164868), (132, 162370), (143, 149880), (156, 137390), (165, 129896), (195, 109912), (220, 97422), (260, 82434), (264, 81185), (286, 74940), (312, 68695), (330, 64948), (390, 54956), (429, 49960), (440, 48711), (520, 41217), (572, 37470), (660, 32474), (715, 29976), (780, 27478), (858, 24980), (1144, 18735), (1249, 17160), (1320, 16237), (1430, 14988), (1560, 13739), (1716, 12490), (2145, 9992), (2498, 8580), (2860, 7494), (3432, 6245), (3747, 5720), (4290, 4996)]