21126075

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 37545216

約数和(自身を除く): 16419141

約数列:

[1, 3, 5, 15, 23, 25, 37, 69, 75, 111, 115, 185, 331, 345, 555, 575, 851, 925, 993, 1655, 1725, 2553, 2775, 4255, 4965, 7613, 8275, 12247, 12765, 21275, 22839, 24825, 36741, 38065, 61235, 63825, 114195, 183705, 190325, 281681, 306175, 570975, 845043, 918525, 1408405, 4225215, 7042025, 21126075]

約数ペア:

[(1, 21126075), (3, 7042025), (5, 4225215), (15, 1408405), (23, 918525), (25, 845043), (37, 570975), (69, 306175), (75, 281681), (111, 190325), (115, 183705), (185, 114195), (331, 63825), (345, 61235), (555, 38065), (575, 36741), (851, 24825), (925, 22839), (993, 21275), (1655, 12765), (1725, 12247), (2553, 8275), (2775, 7613), (4255, 4965)]