20550780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2003}}^1$

素因数の和:2040

約数の個数: 96

約数和(自身を含む): 67334400

約数和(自身を除く): 46783620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 90, 95, 108, 114, 135, 171, 180, 190, 228, 270, 285, 342, 380, 513, 540, 570, 684, 855, 1026, 1140, 1710, 2003, 2052, 2565, 3420, 4006, 5130, 6009, 8012, 10015, 10260, 12018, 18027, 20030, 24036, 30045, 36054, 38057, 40060, 54081, 60090, 72108, 76114, 90135, 108162, 114171, 120180, 152228, 180270, 190285, 216324, 228342, 270405, 342513, 360540, 380570, 456684, 540810, 570855, 685026, 761140, 1027539, 1081620, 1141710, 1370052, 1712565, 2055078, 2283420, 3425130, 4110156, 5137695, 6850260, 10275390, 20550780]

約数ペア:

[(1, 20550780), (2, 10275390), (3, 6850260), (4, 5137695), (5, 4110156), (6, 3425130), (9, 2283420), (10, 2055078), (12, 1712565), (15, 1370052), (18, 1141710), (19, 1081620), (20, 1027539), (27, 761140), (30, 685026), (36, 570855), (38, 540810), (45, 456684), (54, 380570), (57, 360540), (60, 342513), (76, 270405), (90, 228342), (95, 216324), (108, 190285), (114, 180270), (135, 152228), (171, 120180), (180, 114171), (190, 108162), (228, 90135), (270, 76114), (285, 72108), (342, 60090), (380, 54081), (513, 40060), (540, 38057), (570, 36054), (684, 30045), (855, 24036), (1026, 20030), (1140, 18027), (1710, 12018), (2003, 10260), (2052, 10015), (2565, 8012), (3420, 6009), (4006, 5130)]