20128300

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1$

素因数の和:239

約数の個数: 72

約数和(自身を含む): 46441472

約数和(自身を除く): 26313172

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 43, 50, 62, 86, 100, 124, 151, 155, 172, 215, 302, 310, 430, 604, 620, 755, 775, 860, 1075, 1333, 1510, 1550, 2150, 2666, 3020, 3100, 3775, 4300, 4681, 5332, 6493, 6665, 7550, 9362, 12986, 13330, 15100, 18724, 23405, 25972, 26660, 32465, 33325, 46810, 64930, 66650, 93620, 117025, 129860, 133300, 162325, 201283, 234050, 324650, 402566, 468100, 649300, 805132, 1006415, 2012830, 4025660, 5032075, 10064150, 20128300]

約数ペア:

[(1, 20128300), (2, 10064150), (4, 5032075), (5, 4025660), (10, 2012830), (20, 1006415), (25, 805132), (31, 649300), (43, 468100), (50, 402566), (62, 324650), (86, 234050), (100, 201283), (124, 162325), (151, 133300), (155, 129860), (172, 117025), (215, 93620), (302, 66650), (310, 64930), (430, 46810), (604, 33325), (620, 32465), (755, 26660), (775, 25972), (860, 23405), (1075, 18724), (1333, 15100), (1510, 13330), (1550, 12986), (2150, 9362), (2666, 7550), (3020, 6665), (3100, 6493), (3775, 5332), (4300, 4681)]