18995600

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^2\times {\mathrm{281}}^1$

素因数の和:325

約数の個数: 90

約数和(自身を含む): 49593366

約数和(自身を除く): 30597766

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 169, 200, 208, 260, 281, 325, 338, 400, 520, 562, 650, 676, 845, 1040, 1124, 1300, 1352, 1405, 1690, 2248, 2600, 2704, 2810, 3380, 3653, 4225, 4496, 5200, 5620, 6760, 7025, 7306, 8450, 11240, 13520, 14050, 14612, 16900, 18265, 22480, 28100, 29224, 33800, 36530, 47489, 56200, 58448, 67600, 73060, 91325, 94978, 112400, 146120, 182650, 189956, 237445, 292240, 365300, 379912, 474890, 730600, 759824, 949780, 1187225, 1461200, 1899560, 2374450, 3799120, 4748900, 9497800, 18995600]

約数ペア:

[(1, 18995600), (2, 9497800), (4, 4748900), (5, 3799120), (8, 2374450), (10, 1899560), (13, 1461200), (16, 1187225), (20, 949780), (25, 759824), (26, 730600), (40, 474890), (50, 379912), (52, 365300), (65, 292240), (80, 237445), (100, 189956), (104, 182650), (130, 146120), (169, 112400), (200, 94978), (208, 91325), (260, 73060), (281, 67600), (325, 58448), (338, 56200), (400, 47489), (520, 36530), (562, 33800), (650, 29224), (676, 28100), (845, 22480), (1040, 18265), (1124, 16900), (1300, 14612), (1352, 14050), (1405, 13520), (1690, 11240), (2248, 8450), (2600, 7306), (2704, 7025), (2810, 6760), (3380, 5620), (3653, 5200), (4225, 4496)]