400237920

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{557}}^1$

素因数の和:1077

約数の個数: 144

約数和(自身を含む): 1371006000

約数和(自身を除く): 970768080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 499, 557, 720, 998, 1114, 1440, 1497, 1671, 1996, 2228, 2495, 2785, 2994, 3342, 3992, 4456, 4491, 4990, 5013, 5570, 5988, 6684, 7485, 7984, 8355, 8912, 8982, 9980, 10026, 11140, 11976, 13368, 14970, 15968, 16710, 17824, 17964, 19960, 20052, 22280, 22455, 23952, 25065, 26736, 29940, 33420, 35928, 39920, 40104, 44560, 44910, 47904, 50130, 53472, 59880, 66840, 71856, 79840, 80208, 89120, 89820, 100260, 119760, 133680, 143712, 160416, 179640, 200520, 239520, 267360, 277943, 359280, 401040, 555886, 718560, 802080, 833829, 1111772, 1389715, 1667658, 2223544, 2501487, 2779430, 3335316, 4169145, 4447088, 5002974, 5558860, 6670632, 8338290, 8894176, 10005948, 11117720, 12507435, 13341264, 16676580, 20011896, 22235440, 25014870, 26682528, 33353160, 40023792, 44470880, 50029740, 66706320, 80047584, 100059480, 133412640, 200118960, 400237920]

約数ペア:

[(1, 400237920), (2, 200118960), (3, 133412640), (4, 100059480), (5, 80047584), (6, 66706320), (8, 50029740), (9, 44470880), (10, 40023792), (12, 33353160), (15, 26682528), (16, 25014870), (18, 22235440), (20, 20011896), (24, 16676580), (30, 13341264), (32, 12507435), (36, 11117720), (40, 10005948), (45, 8894176), (48, 8338290), (60, 6670632), (72, 5558860), (80, 5002974), (90, 4447088), (96, 4169145), (120, 3335316), (144, 2779430), (160, 2501487), (180, 2223544), (240, 1667658), (288, 1389715), (360, 1111772), (480, 833829), (499, 802080), (557, 718560), (720, 555886), (998, 401040), (1114, 359280), (1440, 277943), (1497, 267360), (1671, 239520), (1996, 200520), (2228, 179640), (2495, 160416), (2785, 143712), (2994, 133680), (3342, 119760), (3992, 100260), (4456, 89820), (4491, 89120), (4990, 80208), (5013, 79840), (5570, 71856), (5988, 66840), (6684, 59880), (7485, 53472), (7984, 50130), (8355, 47904), (8912, 44910), (8982, 44560), (9980, 40104), (10026, 39920), (11140, 35928), (11976, 33420), (13368, 29940), (14970, 26736), (15968, 25065), (16710, 23952), (17824, 22455), (17964, 22280), (19960, 20052)]