19940076

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{311}}^1$

素因数の和:471

約数の個数: 72

約数和(自身を含む): 54853344

約数和(自身を除く): 34913268

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 137, 156, 234, 274, 311, 411, 468, 548, 622, 822, 933, 1233, 1244, 1644, 1781, 1866, 2466, 2799, 3562, 3732, 4043, 4932, 5343, 5598, 7124, 8086, 10686, 11196, 12129, 16029, 16172, 21372, 24258, 32058, 36387, 42607, 48516, 64116, 72774, 85214, 127821, 145548, 170428, 255642, 383463, 511284, 553891, 766926, 1107782, 1533852, 1661673, 2215564, 3323346, 4985019, 6646692, 9970038, 19940076]

約数ペア:

[(1, 19940076), (2, 9970038), (3, 6646692), (4, 4985019), (6, 3323346), (9, 2215564), (12, 1661673), (13, 1533852), (18, 1107782), (26, 766926), (36, 553891), (39, 511284), (52, 383463), (78, 255642), (117, 170428), (137, 145548), (156, 127821), (234, 85214), (274, 72774), (311, 64116), (411, 48516), (468, 42607), (548, 36387), (622, 32058), (822, 24258), (933, 21372), (1233, 16172), (1244, 16029), (1644, 12129), (1781, 11196), (1866, 10686), (2466, 8086), (2799, 7124), (3562, 5598), (3732, 5343), (4043, 4932)]