19851120

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{349}}^1$

素因数の和:447

約数の個数: 120

約数和(自身を含む): 67704000

約数和(自身を除く): 47852880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 79, 80, 90, 120, 144, 158, 180, 237, 240, 316, 349, 360, 395, 474, 632, 698, 711, 720, 790, 948, 1047, 1185, 1264, 1396, 1422, 1580, 1745, 1896, 2094, 2370, 2792, 2844, 3141, 3160, 3490, 3555, 3792, 4188, 4740, 5235, 5584, 5688, 6282, 6320, 6980, 7110, 8376, 9480, 10470, 11376, 12564, 13960, 14220, 15705, 16752, 18960, 20940, 25128, 27571, 27920, 28440, 31410, 41880, 50256, 55142, 56880, 62820, 82713, 83760, 110284, 125640, 137855, 165426, 220568, 248139, 251280, 275710, 330852, 413565, 441136, 496278, 551420, 661704, 827130, 992556, 1102840, 1240695, 1323408, 1654260, 1985112, 2205680, 2481390, 3308520, 3970224, 4962780, 6617040, 9925560, 19851120]

約数ペア:

[(1, 19851120), (2, 9925560), (3, 6617040), (4, 4962780), (5, 3970224), (6, 3308520), (8, 2481390), (9, 2205680), (10, 1985112), (12, 1654260), (15, 1323408), (16, 1240695), (18, 1102840), (20, 992556), (24, 827130), (30, 661704), (36, 551420), (40, 496278), (45, 441136), (48, 413565), (60, 330852), (72, 275710), (79, 251280), (80, 248139), (90, 220568), (120, 165426), (144, 137855), (158, 125640), (180, 110284), (237, 83760), (240, 82713), (316, 62820), (349, 56880), (360, 55142), (395, 50256), (474, 41880), (632, 31410), (698, 28440), (711, 27920), (720, 27571), (790, 25128), (948, 20940), (1047, 18960), (1185, 16752), (1264, 15705), (1396, 14220), (1422, 13960), (1580, 12564), (1745, 11376), (1896, 10470), (2094, 9480), (2370, 8376), (2792, 7110), (2844, 6980), (3141, 6320), (3160, 6282), (3490, 5688), (3555, 5584), (3792, 5235), (4188, 4740)]