28421421

素因数分解:

$3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 46785600

約数和(自身を除く): 18364179

約数列:

[1, 3, 7, 21, 29, 49, 59, 87, 113, 147, 177, 203, 339, 413, 609, 791, 1239, 1421, 1711, 2373, 2891, 3277, 4263, 5133, 5537, 6667, 8673, 9831, 11977, 16611, 20001, 22939, 35931, 46669, 68817, 83839, 140007, 160573, 193343, 251517, 326683, 481719, 580029, 980049, 1353401, 4060203, 9473807, 28421421]

約数ペア:

[(1, 28421421), (3, 9473807), (7, 4060203), (21, 1353401), (29, 980049), (49, 580029), (59, 481719), (87, 326683), (113, 251517), (147, 193343), (177, 160573), (203, 140007), (339, 83839), (413, 68817), (609, 46669), (791, 35931), (1239, 22939), (1421, 20001), (1711, 16611), (2373, 11977), (2891, 9831), (3277, 8673), (4263, 6667), (5133, 5537)]