20547900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{17}}^2\times {\mathrm{79}}^1$

素因数の和:133

約数の個数: 162

約数和(自身を含む): 69283760

約数和(自身を除く): 48735860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 25, 30, 34, 36, 45, 50, 51, 60, 68, 75, 79, 85, 90, 100, 102, 150, 153, 158, 170, 180, 204, 225, 237, 255, 289, 300, 306, 316, 340, 395, 425, 450, 474, 510, 578, 612, 711, 765, 790, 850, 867, 900, 948, 1020, 1156, 1185, 1275, 1343, 1422, 1445, 1530, 1580, 1700, 1734, 1975, 2370, 2550, 2601, 2686, 2844, 2890, 3060, 3468, 3555, 3825, 3950, 4029, 4335, 4740, 5100, 5202, 5372, 5780, 5925, 6715, 7110, 7225, 7650, 7900, 8058, 8670, 10404, 11850, 12087, 13005, 13430, 14220, 14450, 15300, 16116, 17340, 17775, 20145, 21675, 22831, 23700, 24174, 26010, 26860, 28900, 33575, 35550, 40290, 43350, 45662, 48348, 52020, 60435, 65025, 67150, 68493, 71100, 80580, 86700, 91324, 100725, 114155, 120870, 130050, 134300, 136986, 201450, 205479, 228310, 241740, 260100, 273972, 302175, 342465, 402900, 410958, 456620, 570775, 604350, 684930, 821916, 1027395, 1141550, 1208700, 1369860, 1712325, 2054790, 2283100, 3424650, 4109580, 5136975, 6849300, 10273950, 20547900]

約数ペア:

[(1, 20547900), (2, 10273950), (3, 6849300), (4, 5136975), (5, 4109580), (6, 3424650), (9, 2283100), (10, 2054790), (12, 1712325), (15, 1369860), (17, 1208700), (18, 1141550), (20, 1027395), (25, 821916), (30, 684930), (34, 604350), (36, 570775), (45, 456620), (50, 410958), (51, 402900), (60, 342465), (68, 302175), (75, 273972), (79, 260100), (85, 241740), (90, 228310), (100, 205479), (102, 201450), (150, 136986), (153, 134300), (158, 130050), (170, 120870), (180, 114155), (204, 100725), (225, 91324), (237, 86700), (255, 80580), (289, 71100), (300, 68493), (306, 67150), (316, 65025), (340, 60435), (395, 52020), (425, 48348), (450, 45662), (474, 43350), (510, 40290), (578, 35550), (612, 33575), (711, 28900), (765, 26860), (790, 26010), (850, 24174), (867, 23700), (900, 22831), (948, 21675), (1020, 20145), (1156, 17775), (1185, 17340), (1275, 16116), (1343, 15300), (1422, 14450), (1445, 14220), (1530, 13430), (1580, 13005), (1700, 12087), (1734, 11850), (1975, 10404), (2370, 8670), (2550, 8058), (2601, 7900), (2686, 7650), (2844, 7225), (2890, 7110), (3060, 6715), (3468, 5925), (3555, 5780), (3825, 5372), (3950, 5202), (4029, 5100), (4335, 4740)]