78521140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1423}}^1$

素因数の和:1552

約数の個数: 48

約数和(自身を含む): 172247040

約数和(自身を除く): 93725900

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 310, 356, 445, 620, 890, 1423, 1780, 2759, 2846, 5518, 5692, 7115, 11036, 13795, 14230, 27590, 28460, 44113, 55180, 88226, 126647, 176452, 220565, 253294, 441130, 506588, 633235, 882260, 1266470, 2532940, 3926057, 7852114, 15704228, 19630285, 39260570, 78521140]

約数ペア:

[(1, 78521140), (2, 39260570), (4, 19630285), (5, 15704228), (10, 7852114), (20, 3926057), (31, 2532940), (62, 1266470), (89, 882260), (124, 633235), (155, 506588), (178, 441130), (310, 253294), (356, 220565), (445, 176452), (620, 126647), (890, 88226), (1423, 55180), (1780, 44113), (2759, 28460), (2846, 27590), (5518, 14230), (5692, 13795), (7115, 11036)]