21274428

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{373}}^1$

素因数の和:491

約数の個数: 72

約数和(自身を含む): 58496592

約数和(自身を除く): 37222164

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 97, 98, 147, 194, 196, 291, 294, 373, 388, 582, 588, 679, 746, 1119, 1164, 1358, 1492, 2037, 2238, 2611, 2716, 4074, 4476, 4753, 5222, 7833, 8148, 9506, 10444, 14259, 15666, 18277, 19012, 28518, 31332, 36181, 36554, 54831, 57036, 72362, 73108, 108543, 109662, 144724, 217086, 219324, 253267, 434172, 506534, 759801, 1013068, 1519602, 1772869, 3039204, 3545738, 5318607, 7091476, 10637214, 21274428]

約数ペア:

[(1, 21274428), (2, 10637214), (3, 7091476), (4, 5318607), (6, 3545738), (7, 3039204), (12, 1772869), (14, 1519602), (21, 1013068), (28, 759801), (42, 506534), (49, 434172), (84, 253267), (97, 219324), (98, 217086), (147, 144724), (194, 109662), (196, 108543), (291, 73108), (294, 72362), (373, 57036), (388, 54831), (582, 36554), (588, 36181), (679, 31332), (746, 28518), (1119, 19012), (1164, 18277), (1358, 15666), (1492, 14259), (2037, 10444), (2238, 9506), (2611, 8148), (2716, 7833), (4074, 5222), (4476, 4753)]