20030920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5503}}^1$

素因数の和:5534

約数の個数: 64

約数和(自身を含む): 55480320

約数和(自身を除く): 35449400

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5503, 11006, 22012, 27515, 38521, 44024, 55030, 71539, 77042, 110060, 143078, 154084, 192605, 220120, 286156, 308168, 357695, 385210, 500773, 572312, 715390, 770420, 1001546, 1430780, 1540840, 2003092, 2503865, 2861560, 4006184, 5007730, 10015460, 20030920]

約数ペア:

[(1, 20030920), (2, 10015460), (4, 5007730), (5, 4006184), (7, 2861560), (8, 2503865), (10, 2003092), (13, 1540840), (14, 1430780), (20, 1001546), (26, 770420), (28, 715390), (35, 572312), (40, 500773), (52, 385210), (56, 357695), (65, 308168), (70, 286156), (91, 220120), (104, 192605), (130, 154084), (140, 143078), (182, 110060), (260, 77042), (280, 71539), (364, 55030), (455, 44024), (520, 38521), (728, 27515), (910, 22012), (1820, 11006), (3640, 5503)]