20643120

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{503}}^1$

素因数の和:544

約数の個数: 160

約数和(自身を含む): 74995200

約数和(自身を除く): 54352080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 48, 54, 57, 60, 72, 76, 80, 90, 95, 108, 114, 120, 135, 144, 152, 171, 180, 190, 216, 228, 240, 270, 285, 304, 342, 360, 380, 432, 456, 503, 513, 540, 570, 684, 720, 760, 855, 912, 1006, 1026, 1080, 1140, 1368, 1509, 1520, 1710, 2012, 2052, 2160, 2280, 2515, 2565, 2736, 3018, 3420, 4024, 4104, 4527, 4560, 5030, 5130, 6036, 6840, 7545, 8048, 8208, 9054, 9557, 10060, 10260, 12072, 13581, 13680, 15090, 18108, 19114, 20120, 20520, 22635, 24144, 27162, 28671, 30180, 36216, 38228, 40240, 41040, 45270, 47785, 54324, 57342, 60360, 67905, 72432, 76456, 86013, 90540, 95570, 108648, 114684, 120720, 135810, 143355, 152912, 172026, 181080, 191140, 217296, 229368, 258039, 271620, 286710, 344052, 362160, 382280, 430065, 458736, 516078, 543240, 573420, 688104, 764560, 860130, 1032156, 1086480, 1146840, 1290195, 1376208, 1720260, 2064312, 2293680, 2580390, 3440520, 4128624, 5160780, 6881040, 10321560, 20643120]

約数ペア:

[(1, 20643120), (2, 10321560), (3, 6881040), (4, 5160780), (5, 4128624), (6, 3440520), (8, 2580390), (9, 2293680), (10, 2064312), (12, 1720260), (15, 1376208), (16, 1290195), (18, 1146840), (19, 1086480), (20, 1032156), (24, 860130), (27, 764560), (30, 688104), (36, 573420), (38, 543240), (40, 516078), (45, 458736), (48, 430065), (54, 382280), (57, 362160), (60, 344052), (72, 286710), (76, 271620), (80, 258039), (90, 229368), (95, 217296), (108, 191140), (114, 181080), (120, 172026), (135, 152912), (144, 143355), (152, 135810), (171, 120720), (180, 114684), (190, 108648), (216, 95570), (228, 90540), (240, 86013), (270, 76456), (285, 72432), (304, 67905), (342, 60360), (360, 57342), (380, 54324), (432, 47785), (456, 45270), (503, 41040), (513, 40240), (540, 38228), (570, 36216), (684, 30180), (720, 28671), (760, 27162), (855, 24144), (912, 22635), (1006, 20520), (1026, 20120), (1080, 19114), (1140, 18108), (1368, 15090), (1509, 13680), (1520, 13581), (1710, 12072), (2012, 10260), (2052, 10060), (2160, 9557), (2280, 9054), (2515, 8208), (2565, 8048), (2736, 7545), (3018, 6840), (3420, 6036), (4024, 5130), (4104, 5030), (4527, 4560)]