31212265

素因数分解:

$5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{191}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 47278080

約数和(自身を除く): 16065815

約数列:

[1, 5, 7, 23, 29, 35, 49, 115, 145, 161, 191, 203, 245, 667, 805, 955, 1015, 1127, 1337, 1421, 3335, 4393, 4669, 5539, 5635, 6685, 7105, 9359, 21965, 23345, 27695, 30751, 32683, 38773, 46795, 127397, 153755, 163415, 193865, 215257, 271411, 636985, 891779, 1076285, 1357055, 4458895, 6242453, 31212265]

約数ペア:

[(1, 31212265), (5, 6242453), (7, 4458895), (23, 1357055), (29, 1076285), (35, 891779), (49, 636985), (115, 271411), (145, 215257), (161, 193865), (191, 163415), (203, 153755), (245, 127397), (667, 46795), (805, 38773), (955, 32683), (1015, 30751), (1127, 27695), (1337, 23345), (1421, 21965), (3335, 9359), (4393, 7105), (4669, 6685), (5539, 5635)]