215878390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{3889}}^1$

素因数の和:3977

約数の個数: 64

約数和(自身を含む): 486218880

約数和(自身を除く): 270340490

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 61, 65, 70, 91, 122, 130, 182, 305, 427, 455, 610, 793, 854, 910, 1586, 2135, 3889, 3965, 4270, 5551, 7778, 7930, 11102, 19445, 27223, 27755, 38890, 50557, 54446, 55510, 101114, 136115, 237229, 252785, 272230, 353899, 474458, 505570, 707798, 1186145, 1660603, 1769495, 2372290, 3083977, 3321206, 3538990, 6167954, 8303015, 15419885, 16606030, 21587839, 30839770, 43175678, 107939195, 215878390]

約数ペア:

[(1, 215878390), (2, 107939195), (5, 43175678), (7, 30839770), (10, 21587839), (13, 16606030), (14, 15419885), (26, 8303015), (35, 6167954), (61, 3538990), (65, 3321206), (70, 3083977), (91, 2372290), (122, 1769495), (130, 1660603), (182, 1186145), (305, 707798), (427, 505570), (455, 474458), (610, 353899), (793, 272230), (854, 252785), (910, 237229), (1586, 136115), (2135, 101114), (3889, 55510), (3965, 54446), (4270, 50557), (5551, 38890), (7778, 27755), (7930, 27223), (11102, 19445)]