20813520

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{953}}^1$

素因数の和:989

約数の個数: 160

約数和(自身を含む): 79494912

約数和(自身を除く): 58681392

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 48, 52, 56, 60, 65, 70, 78, 80, 84, 91, 104, 105, 112, 120, 130, 140, 156, 168, 182, 195, 208, 210, 240, 260, 273, 280, 312, 336, 364, 390, 420, 455, 520, 546, 560, 624, 728, 780, 840, 910, 953, 1040, 1092, 1365, 1456, 1560, 1680, 1820, 1906, 2184, 2730, 2859, 3120, 3640, 3812, 4368, 4765, 5460, 5718, 6671, 7280, 7624, 9530, 10920, 11436, 12389, 13342, 14295, 15248, 19060, 20013, 21840, 22872, 24778, 26684, 28590, 33355, 37167, 38120, 40026, 45744, 49556, 53368, 57180, 61945, 66710, 74334, 76240, 80052, 86723, 99112, 100065, 106736, 114360, 123890, 133420, 148668, 160104, 173446, 185835, 198224, 200130, 228720, 247780, 260169, 266840, 297336, 320208, 346892, 371670, 400260, 433615, 495560, 520338, 533680, 594672, 693784, 743340, 800520, 867230, 991120, 1040676, 1300845, 1387568, 1486680, 1601040, 1734460, 2081352, 2601690, 2973360, 3468920, 4162704, 5203380, 6937840, 10406760, 20813520]

約数ペア:

[(1, 20813520), (2, 10406760), (3, 6937840), (4, 5203380), (5, 4162704), (6, 3468920), (7, 2973360), (8, 2601690), (10, 2081352), (12, 1734460), (13, 1601040), (14, 1486680), (15, 1387568), (16, 1300845), (20, 1040676), (21, 991120), (24, 867230), (26, 800520), (28, 743340), (30, 693784), (35, 594672), (39, 533680), (40, 520338), (42, 495560), (48, 433615), (52, 400260), (56, 371670), (60, 346892), (65, 320208), (70, 297336), (78, 266840), (80, 260169), (84, 247780), (91, 228720), (104, 200130), (105, 198224), (112, 185835), (120, 173446), (130, 160104), (140, 148668), (156, 133420), (168, 123890), (182, 114360), (195, 106736), (208, 100065), (210, 99112), (240, 86723), (260, 80052), (273, 76240), (280, 74334), (312, 66710), (336, 61945), (364, 57180), (390, 53368), (420, 49556), (455, 45744), (520, 40026), (546, 38120), (560, 37167), (624, 33355), (728, 28590), (780, 26684), (840, 24778), (910, 22872), (953, 21840), (1040, 20013), (1092, 19060), (1365, 15248), (1456, 14295), (1560, 13342), (1680, 12389), (1820, 11436), (1906, 10920), (2184, 9530), (2730, 7624), (2859, 7280), (3120, 6671), (3640, 5718), (3812, 5460), (4368, 4765)]