387984400

素因数分解:

$2^4\times 5^2\times {\mathrm{61}}^1\times {\mathrm{15901}}^1$

素因数の和:15980

約数の個数: 60

約数和(自身を含む): 947472964

約数和(自身を除く): 559488564

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 61, 80, 100, 122, 200, 244, 305, 400, 488, 610, 976, 1220, 1525, 2440, 3050, 4880, 6100, 12200, 15901, 24400, 31802, 63604, 79505, 127208, 159010, 254416, 318020, 397525, 636040, 795050, 969961, 1272080, 1590100, 1939922, 3180200, 3879844, 4849805, 6360400, 7759688, 9699610, 15519376, 19399220, 24249025, 38798440, 48498050, 77596880, 96996100, 193992200, 387984400]

約数ペア:

[(1, 387984400), (2, 193992200), (4, 96996100), (5, 77596880), (8, 48498050), (10, 38798440), (16, 24249025), (20, 19399220), (25, 15519376), (40, 9699610), (50, 7759688), (61, 6360400), (80, 4849805), (100, 3879844), (122, 3180200), (200, 1939922), (244, 1590100), (305, 1272080), (400, 969961), (488, 795050), (610, 636040), (976, 397525), (1220, 318020), (1525, 254416), (2440, 159010), (3050, 127208), (4880, 79505), (6100, 63604), (12200, 31802), (15901, 24400)]