21094880

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4253}}^1$

素因数の和:4299

約数の個数: 48

約数和(自身を含む): 51456384

約数和(自身を除く): 30361504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4253, 4960, 8506, 17012, 21265, 34024, 42530, 68048, 85060, 131843, 136096, 170120, 263686, 340240, 527372, 659215, 680480, 1054744, 1318430, 2109488, 2636860, 4218976, 5273720, 10547440, 21094880]

約数ペア:

[(1, 21094880), (2, 10547440), (4, 5273720), (5, 4218976), (8, 2636860), (10, 2109488), (16, 1318430), (20, 1054744), (31, 680480), (32, 659215), (40, 527372), (62, 340240), (80, 263686), (124, 170120), (155, 136096), (160, 131843), (248, 85060), (310, 68048), (496, 42530), (620, 34024), (992, 21265), (1240, 17012), (2480, 8506), (4253, 4960)]