400144920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{476363}}^1$

素因数の和:476384

約数の個数: 64

約数和(自身を含む): 1371928320

約数和(自身を除く): 971783400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 476363, 952726, 1429089, 1905452, 2381815, 2858178, 3334541, 3810904, 4763630, 5716356, 6669082, 7145445, 9527260, 10003623, 11432712, 13338164, 14290890, 16672705, 19054520, 20007246, 26676328, 28581780, 33345410, 40014492, 50018115, 57163560, 66690820, 80028984, 100036230, 133381640, 200072460, 400144920]

約数ペア:

[(1, 400144920), (2, 200072460), (3, 133381640), (4, 100036230), (5, 80028984), (6, 66690820), (7, 57163560), (8, 50018115), (10, 40014492), (12, 33345410), (14, 28581780), (15, 26676328), (20, 20007246), (21, 19054520), (24, 16672705), (28, 14290890), (30, 13338164), (35, 11432712), (40, 10003623), (42, 9527260), (56, 7145445), (60, 6669082), (70, 5716356), (84, 4763630), (105, 3810904), (120, 3334541), (140, 2858178), (168, 2381815), (210, 1905452), (280, 1429089), (420, 952726), (840, 476363)]