21374392

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{373}}^1$

素因数の和:440

約数の個数: 64

約数和(自身を含む): 47124000

約数和(自身を除く): 25749608

約数列:

[1, 2, 4, 8, 13, 19, 26, 29, 38, 52, 58, 76, 104, 116, 152, 232, 247, 373, 377, 494, 551, 746, 754, 988, 1102, 1492, 1508, 1976, 2204, 2984, 3016, 4408, 4849, 7087, 7163, 9698, 10817, 14174, 14326, 19396, 21634, 28348, 28652, 38792, 43268, 56696, 57304, 86536, 92131, 140621, 184262, 205523, 281242, 368524, 411046, 562484, 737048, 822092, 1124968, 1644184, 2671799, 5343598, 10687196, 21374392]

約数ペア:

[(1, 21374392), (2, 10687196), (4, 5343598), (8, 2671799), (13, 1644184), (19, 1124968), (26, 822092), (29, 737048), (38, 562484), (52, 411046), (58, 368524), (76, 281242), (104, 205523), (116, 184262), (152, 140621), (232, 92131), (247, 86536), (373, 57304), (377, 56696), (494, 43268), (551, 38792), (746, 28652), (754, 28348), (988, 21634), (1102, 19396), (1492, 14326), (1508, 14174), (1976, 10817), (2204, 9698), (2984, 7163), (3016, 7087), (4408, 4849)]