21761628

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:243

約数の個数: 96

約数和(自身を含む): 61329408

約数和(自身を除く): 39567780

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 31, 42, 61, 62, 84, 93, 122, 124, 137, 183, 186, 217, 244, 274, 366, 372, 411, 427, 434, 548, 651, 732, 822, 854, 868, 959, 1281, 1302, 1644, 1708, 1891, 1918, 2562, 2604, 2877, 3782, 3836, 4247, 5124, 5673, 5754, 7564, 8357, 8494, 11346, 11508, 12741, 13237, 16714, 16988, 22692, 25071, 25482, 26474, 29729, 33428, 39711, 50142, 50964, 52948, 58499, 59458, 79422, 89187, 100284, 116998, 118916, 158844, 175497, 178374, 233996, 259067, 350994, 356748, 518134, 701988, 777201, 1036268, 1554402, 1813469, 3108804, 3626938, 5440407, 7253876, 10880814, 21761628]

約数ペア:

[(1, 21761628), (2, 10880814), (3, 7253876), (4, 5440407), (6, 3626938), (7, 3108804), (12, 1813469), (14, 1554402), (21, 1036268), (28, 777201), (31, 701988), (42, 518134), (61, 356748), (62, 350994), (84, 259067), (93, 233996), (122, 178374), (124, 175497), (137, 158844), (183, 118916), (186, 116998), (217, 100284), (244, 89187), (274, 79422), (366, 59458), (372, 58499), (411, 52948), (427, 50964), (434, 50142), (548, 39711), (651, 33428), (732, 29729), (822, 26474), (854, 25482), (868, 25071), (959, 22692), (1281, 16988), (1302, 16714), (1644, 13237), (1708, 12741), (1891, 11508), (1918, 11346), (2562, 8494), (2604, 8357), (2877, 7564), (3782, 5754), (3836, 5673), (4247, 5124)]