211325140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{167}}^1$

素因数の和:377

約数の個数: 96

約数和(自身を含む): 499451904

約数和(自身を除く): 288126764

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 157, 167, 260, 310, 314, 334, 403, 620, 628, 668, 785, 806, 835, 1570, 1612, 1670, 2015, 2041, 2171, 3140, 3340, 4030, 4082, 4342, 4867, 5177, 8060, 8164, 8684, 9734, 10205, 10354, 10855, 19468, 20410, 20708, 21710, 24335, 25885, 26219, 40820, 43420, 48670, 51770, 52438, 63271, 67301, 97340, 103540, 104876, 126542, 131095, 134602, 253084, 262190, 269204, 316355, 336505, 340847, 524380, 632710, 673010, 681694, 812789, 1265420, 1346020, 1363388, 1625578, 1704235, 3251156, 3408470, 4063945, 6816940, 8127890, 10566257, 16255780, 21132514, 42265028, 52831285, 105662570, 211325140]

約数ペア:

[(1, 211325140), (2, 105662570), (4, 52831285), (5, 42265028), (10, 21132514), (13, 16255780), (20, 10566257), (26, 8127890), (31, 6816940), (52, 4063945), (62, 3408470), (65, 3251156), (124, 1704235), (130, 1625578), (155, 1363388), (157, 1346020), (167, 1265420), (260, 812789), (310, 681694), (314, 673010), (334, 632710), (403, 524380), (620, 340847), (628, 336505), (668, 316355), (785, 269204), (806, 262190), (835, 253084), (1570, 134602), (1612, 131095), (1670, 126542), (2015, 104876), (2041, 103540), (2171, 97340), (3140, 67301), (3340, 63271), (4030, 52438), (4082, 51770), (4342, 48670), (4867, 43420), (5177, 40820), (8060, 26219), (8164, 25885), (8684, 24335), (9734, 21710), (10205, 20708), (10354, 20410), (10855, 19468)]