81457560

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{11909}}^1$

素因数の和:11945

約数の個数: 96

約数和(自身を含む): 278694000

約数和(自身を除く): 197236440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 30, 36, 38, 40, 45, 57, 60, 72, 76, 90, 95, 114, 120, 152, 171, 180, 190, 228, 285, 342, 360, 380, 456, 570, 684, 760, 855, 1140, 1368, 1710, 2280, 3420, 6840, 11909, 23818, 35727, 47636, 59545, 71454, 95272, 107181, 119090, 142908, 178635, 214362, 226271, 238180, 285816, 357270, 428724, 452542, 476360, 535905, 678813, 714540, 857448, 905084, 1071810, 1131355, 1357626, 1429080, 1810168, 2036439, 2143620, 2262710, 2715252, 3394065, 4072878, 4287240, 4525420, 5430504, 6788130, 8145756, 9050840, 10182195, 13576260, 16291512, 20364390, 27152520, 40728780, 81457560]

約数ペア:

[(1, 81457560), (2, 40728780), (3, 27152520), (4, 20364390), (5, 16291512), (6, 13576260), (8, 10182195), (9, 9050840), (10, 8145756), (12, 6788130), (15, 5430504), (18, 4525420), (19, 4287240), (20, 4072878), (24, 3394065), (30, 2715252), (36, 2262710), (38, 2143620), (40, 2036439), (45, 1810168), (57, 1429080), (60, 1357626), (72, 1131355), (76, 1071810), (90, 905084), (95, 857448), (114, 714540), (120, 678813), (152, 535905), (171, 476360), (180, 452542), (190, 428724), (228, 357270), (285, 285816), (342, 238180), (360, 226271), (380, 214362), (456, 178635), (570, 142908), (684, 119090), (760, 107181), (855, 95272), (1140, 71454), (1368, 59545), (1710, 47636), (2280, 35727), (3420, 23818), (6840, 11909)]