20856854760

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{503}}^1\times {\mathrm{49363}}^1$

素因数の和:49887

約数の個数: 128

約数和(自身を含む): 71652833280

約数和(自身を除く): 50795978520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 503, 840, 1006, 1509, 2012, 2515, 3018, 3521, 4024, 5030, 6036, 7042, 7545, 10060, 10563, 12072, 14084, 15090, 17605, 20120, 21126, 28168, 30180, 35210, 42252, 49363, 52815, 60360, 70420, 84504, 98726, 105630, 140840, 148089, 197452, 211260, 246815, 296178, 345541, 394904, 422520, 493630, 592356, 691082, 740445, 987260, 1036623, 1184712, 1382164, 1480890, 1727705, 1974520, 2073246, 2764328, 2961780, 3455410, 4146492, 5183115, 5923560, 6910820, 8292984, 10366230, 13821640, 20732460, 24829589, 41464920, 49659178, 74488767, 99318356, 124147945, 148977534, 173807123, 198636712, 248295890, 297955068, 347614246, 372443835, 496591780, 521421369, 595910136, 695228492, 744887670, 869035615, 993183560, 1042842738, 1390456984, 1489775340, 1738071230, 2085685476, 2607106845, 2979550680, 3476142460, 4171370952, 5214213690, 6952284920, 10428427380, 20856854760]

約数ペア:

[(1, 20856854760), (2, 10428427380), (3, 6952284920), (4, 5214213690), (5, 4171370952), (6, 3476142460), (7, 2979550680), (8, 2607106845), (10, 2085685476), (12, 1738071230), (14, 1489775340), (15, 1390456984), (20, 1042842738), (21, 993183560), (24, 869035615), (28, 744887670), (30, 695228492), (35, 595910136), (40, 521421369), (42, 496591780), (56, 372443835), (60, 347614246), (70, 297955068), (84, 248295890), (105, 198636712), (120, 173807123), (140, 148977534), (168, 124147945), (210, 99318356), (280, 74488767), (420, 49659178), (503, 41464920), (840, 24829589), (1006, 20732460), (1509, 13821640), (2012, 10366230), (2515, 8292984), (3018, 6910820), (3521, 5923560), (4024, 5183115), (5030, 4146492), (6036, 3455410), (7042, 2961780), (7545, 2764328), (10060, 2073246), (10563, 1974520), (12072, 1727705), (14084, 1480890), (15090, 1382164), (17605, 1184712), (20120, 1036623), (21126, 987260), (28168, 740445), (30180, 691082), (35210, 592356), (42252, 493630), (49363, 422520), (52815, 394904), (60360, 345541), (70420, 296178), (84504, 246815), (98726, 211260), (105630, 197452), (140840, 148089)]