31790439

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 51667200

約数和(自身を除く): 19876761

約数列:

[1, 3, 9, 19, 23, 57, 59, 69, 137, 171, 177, 207, 411, 437, 531, 1121, 1233, 1311, 1357, 2603, 3151, 3363, 3933, 4071, 7809, 8083, 9453, 10089, 12213, 23427, 24249, 25783, 28359, 59869, 72747, 77349, 153577, 179607, 185909, 232047, 460731, 538821, 557727, 1382193, 1673181, 3532271, 10596813, 31790439]

約数ペア:

[(1, 31790439), (3, 10596813), (9, 3532271), (19, 1673181), (23, 1382193), (57, 557727), (59, 538821), (69, 460731), (137, 232047), (171, 185909), (177, 179607), (207, 153577), (411, 77349), (437, 72747), (531, 59869), (1121, 28359), (1233, 25783), (1311, 24249), (1357, 23427), (2603, 12213), (3151, 10089), (3363, 9453), (3933, 8083), (4071, 7809)]