19891970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1$

素因数の和:323

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 23653630

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 41, 58, 70, 82, 145, 203, 205, 239, 287, 290, 406, 410, 478, 574, 1015, 1189, 1195, 1435, 1673, 2030, 2378, 2390, 2870, 3346, 5945, 6931, 8323, 8365, 9799, 11890, 13862, 16646, 16730, 19598, 34655, 41615, 48517, 48995, 68593, 69310, 83230, 97034, 97990, 137186, 242585, 284171, 342965, 485170, 568342, 685930, 1420855, 1989197, 2841710, 3978394, 9945985, 19891970]

約数ペア:

[(1, 19891970), (2, 9945985), (5, 3978394), (7, 2841710), (10, 1989197), (14, 1420855), (29, 685930), (35, 568342), (41, 485170), (58, 342965), (70, 284171), (82, 242585), (145, 137186), (203, 97990), (205, 97034), (239, 83230), (287, 69310), (290, 68593), (406, 48995), (410, 48517), (478, 41615), (574, 34655), (1015, 19598), (1189, 16730), (1195, 16646), (1435, 13862), (1673, 11890), (2030, 9799), (2378, 8365), (2390, 8323), (2870, 6931), (3346, 5945)]