278728191

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{1291}}^1$

素因数の和:1476

約数の個数: 48

約数和(自身を含む): 483724800

約数和(自身を除く): 204996609

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 149, 161, 207, 447, 483, 1043, 1291, 1341, 1449, 3129, 3427, 3873, 9037, 9387, 10281, 11619, 23989, 27111, 29693, 30843, 71967, 81333, 89079, 192359, 207851, 215901, 267237, 577077, 623553, 1346513, 1731231, 1870659, 4039539, 4424257, 12118617, 13272771, 30969799, 39818313, 92909397, 278728191]

約数ペア:

[(1, 278728191), (3, 92909397), (7, 39818313), (9, 30969799), (21, 13272771), (23, 12118617), (63, 4424257), (69, 4039539), (149, 1870659), (161, 1731231), (207, 1346513), (447, 623553), (483, 577077), (1043, 267237), (1291, 215901), (1341, 207851), (1449, 192359), (3129, 89079), (3427, 81333), (3873, 71967), (9037, 30843), (9387, 29693), (10281, 27111), (11619, 23989)]