21259490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1$

素因数の和:243

約数の個数: 64

約数和(自身を含む): 46061568

約数和(自身を除く): 24802078

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 97, 101, 155, 194, 202, 217, 310, 434, 485, 505, 679, 707, 970, 1010, 1085, 1358, 1414, 2170, 3007, 3131, 3395, 3535, 6014, 6262, 6790, 7070, 9797, 15035, 15655, 19594, 21049, 21917, 30070, 31310, 42098, 43834, 48985, 68579, 97970, 105245, 109585, 137158, 210490, 219170, 303707, 342895, 607414, 685790, 1518535, 2125949, 3037070, 4251898, 10629745, 21259490]

約数ペア:

[(1, 21259490), (2, 10629745), (5, 4251898), (7, 3037070), (10, 2125949), (14, 1518535), (31, 685790), (35, 607414), (62, 342895), (70, 303707), (97, 219170), (101, 210490), (155, 137158), (194, 109585), (202, 105245), (217, 97970), (310, 68579), (434, 48985), (485, 43834), (505, 42098), (679, 31310), (707, 30070), (970, 21917), (1010, 21049), (1085, 19594), (1358, 15655), (1414, 15035), (2170, 9797), (3007, 7070), (3131, 6790), (3395, 6262), (3535, 6014)]