231878140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{2213}}^1$

素因数の和:2279

約数の個数: 72

約数和(自身を含む): 544537728

約数和(自身を除く): 312659588

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 169, 260, 310, 338, 403, 620, 676, 806, 845, 1612, 1690, 2015, 2213, 3380, 4030, 4426, 5239, 8060, 8852, 10478, 11065, 20956, 22130, 26195, 28769, 44260, 52390, 57538, 68603, 104780, 115076, 137206, 143845, 274412, 287690, 343015, 373997, 575380, 686030, 747994, 891839, 1372060, 1495988, 1783678, 1869985, 3567356, 3739970, 4459195, 7479940, 8918390, 11593907, 17836780, 23187814, 46375628, 57969535, 115939070, 231878140]

約数ペア:

[(1, 231878140), (2, 115939070), (4, 57969535), (5, 46375628), (10, 23187814), (13, 17836780), (20, 11593907), (26, 8918390), (31, 7479940), (52, 4459195), (62, 3739970), (65, 3567356), (124, 1869985), (130, 1783678), (155, 1495988), (169, 1372060), (260, 891839), (310, 747994), (338, 686030), (403, 575380), (620, 373997), (676, 343015), (806, 287690), (845, 274412), (1612, 143845), (1690, 137206), (2015, 115076), (2213, 104780), (3380, 68603), (4030, 57538), (4426, 52390), (5239, 44260), (8060, 28769), (8852, 26195), (10478, 22130), (11065, 20956)]