21816100

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{313}}^1$

素因数の和:385

約数の個数: 72

約数和(自身を含む): 51512328

約数和(自身を除く): 29696228

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 41, 50, 68, 82, 85, 100, 164, 170, 205, 313, 340, 410, 425, 626, 697, 820, 850, 1025, 1252, 1394, 1565, 1700, 2050, 2788, 3130, 3485, 4100, 5321, 6260, 6970, 7825, 10642, 12833, 13940, 15650, 17425, 21284, 25666, 26605, 31300, 34850, 51332, 53210, 64165, 69700, 106420, 128330, 133025, 218161, 256660, 266050, 320825, 436322, 532100, 641650, 872644, 1090805, 1283300, 2181610, 4363220, 5454025, 10908050, 21816100]

約数ペア:

[(1, 21816100), (2, 10908050), (4, 5454025), (5, 4363220), (10, 2181610), (17, 1283300), (20, 1090805), (25, 872644), (34, 641650), (41, 532100), (50, 436322), (68, 320825), (82, 266050), (85, 256660), (100, 218161), (164, 133025), (170, 128330), (205, 106420), (313, 69700), (340, 64165), (410, 53210), (425, 51332), (626, 34850), (697, 31300), (820, 26605), (850, 25666), (1025, 21284), (1252, 17425), (1394, 15650), (1565, 13940), (1700, 12833), (2050, 10642), (2788, 7825), (3130, 6970), (3485, 6260), (4100, 5321)]