19890720

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{727}}^1$

素因数の和:767

約数の個数: 144

約数和(自身を含む): 71547840

約数和(自身を除く): 51657120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 32, 36, 38, 40, 45, 48, 57, 60, 72, 76, 80, 90, 95, 96, 114, 120, 144, 152, 160, 171, 180, 190, 228, 240, 285, 288, 304, 342, 360, 380, 456, 480, 570, 608, 684, 720, 727, 760, 855, 912, 1140, 1368, 1440, 1454, 1520, 1710, 1824, 2181, 2280, 2736, 2908, 3040, 3420, 3635, 4362, 4560, 5472, 5816, 6543, 6840, 7270, 8724, 9120, 10905, 11632, 13086, 13680, 13813, 14540, 17448, 21810, 23264, 26172, 27360, 27626, 29080, 32715, 34896, 41439, 43620, 52344, 55252, 58160, 65430, 69065, 69792, 82878, 87240, 104688, 110504, 116320, 124317, 130860, 138130, 165756, 174480, 207195, 209376, 221008, 248634, 261720, 276260, 331512, 348960, 414390, 442016, 497268, 523440, 552520, 621585, 663024, 828780, 994536, 1046880, 1105040, 1243170, 1326048, 1657560, 1989072, 2210080, 2486340, 3315120, 3978144, 4972680, 6630240, 9945360, 19890720]

約数ペア:

[(1, 19890720), (2, 9945360), (3, 6630240), (4, 4972680), (5, 3978144), (6, 3315120), (8, 2486340), (9, 2210080), (10, 1989072), (12, 1657560), (15, 1326048), (16, 1243170), (18, 1105040), (19, 1046880), (20, 994536), (24, 828780), (30, 663024), (32, 621585), (36, 552520), (38, 523440), (40, 497268), (45, 442016), (48, 414390), (57, 348960), (60, 331512), (72, 276260), (76, 261720), (80, 248634), (90, 221008), (95, 209376), (96, 207195), (114, 174480), (120, 165756), (144, 138130), (152, 130860), (160, 124317), (171, 116320), (180, 110504), (190, 104688), (228, 87240), (240, 82878), (285, 69792), (288, 69065), (304, 65430), (342, 58160), (360, 55252), (380, 52344), (456, 43620), (480, 41439), (570, 34896), (608, 32715), (684, 29080), (720, 27626), (727, 27360), (760, 26172), (855, 23264), (912, 21810), (1140, 17448), (1368, 14540), (1440, 13813), (1454, 13680), (1520, 13086), (1710, 11632), (1824, 10905), (2181, 9120), (2280, 8724), (2736, 7270), (2908, 6840), (3040, 6543), (3420, 5816), (3635, 5472), (4362, 4560)]