21872760

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2003}}^1$

素因数の和:2037

約数の個数: 128

約数和(自身を含む): 80801280

約数和(自身を除く): 58928520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 260, 273, 280, 312, 364, 390, 420, 455, 520, 546, 728, 780, 840, 910, 1092, 1365, 1560, 1820, 2003, 2184, 2730, 3640, 4006, 5460, 6009, 8012, 10015, 10920, 12018, 14021, 16024, 20030, 24036, 26039, 28042, 30045, 40060, 42063, 48072, 52078, 56084, 60090, 70105, 78117, 80120, 84126, 104156, 112168, 120180, 130195, 140210, 156234, 168252, 182273, 208312, 210315, 240360, 260390, 280420, 312468, 336504, 364546, 390585, 420630, 520780, 546819, 560840, 624936, 729092, 781170, 841260, 911365, 1041560, 1093638, 1458184, 1562340, 1682520, 1822730, 2187276, 2734095, 3124680, 3645460, 4374552, 5468190, 7290920, 10936380, 21872760]

約数ペア:

[(1, 21872760), (2, 10936380), (3, 7290920), (4, 5468190), (5, 4374552), (6, 3645460), (7, 3124680), (8, 2734095), (10, 2187276), (12, 1822730), (13, 1682520), (14, 1562340), (15, 1458184), (20, 1093638), (21, 1041560), (24, 911365), (26, 841260), (28, 781170), (30, 729092), (35, 624936), (39, 560840), (40, 546819), (42, 520780), (52, 420630), (56, 390585), (60, 364546), (65, 336504), (70, 312468), (78, 280420), (84, 260390), (91, 240360), (104, 210315), (105, 208312), (120, 182273), (130, 168252), (140, 156234), (156, 140210), (168, 130195), (182, 120180), (195, 112168), (210, 104156), (260, 84126), (273, 80120), (280, 78117), (312, 70105), (364, 60090), (390, 56084), (420, 52078), (455, 48072), (520, 42063), (546, 40060), (728, 30045), (780, 28042), (840, 26039), (910, 24036), (1092, 20030), (1365, 16024), (1560, 14021), (1820, 12018), (2003, 10920), (2184, 10015), (2730, 8012), (3640, 6009), (4006, 5460)]