19860420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19471}}^1$

素因数の和:19500

約数の個数: 48

約数和(自身を含む): 58883328

約数和(自身を除く): 39022908

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 19471, 38942, 58413, 77884, 97355, 116826, 194710, 233652, 292065, 331007, 389420, 584130, 662014, 993021, 1168260, 1324028, 1655035, 1986042, 3310070, 3972084, 4965105, 6620140, 9930210, 19860420]

約数ペア:

[(1, 19860420), (2, 9930210), (3, 6620140), (4, 4965105), (5, 3972084), (6, 3310070), (10, 1986042), (12, 1655035), (15, 1324028), (17, 1168260), (20, 993021), (30, 662014), (34, 584130), (51, 389420), (60, 331007), (68, 292065), (85, 233652), (102, 194710), (170, 116826), (204, 97355), (255, 77884), (340, 58413), (510, 38942), (1020, 19471)]