21392040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2003}}^1$

素因数の和:2106

約数の個数: 64

約数和(自身を含む): 64929600

約数和(自身を除く): 43537560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 89, 120, 178, 267, 356, 445, 534, 712, 890, 1068, 1335, 1780, 2003, 2136, 2670, 3560, 4006, 5340, 6009, 8012, 10015, 10680, 12018, 16024, 20030, 24036, 30045, 40060, 48072, 60090, 80120, 120180, 178267, 240360, 356534, 534801, 713068, 891335, 1069602, 1426136, 1782670, 2139204, 2674005, 3565340, 4278408, 5348010, 7130680, 10696020, 21392040]

約数ペア:

[(1, 21392040), (2, 10696020), (3, 7130680), (4, 5348010), (5, 4278408), (6, 3565340), (8, 2674005), (10, 2139204), (12, 1782670), (15, 1426136), (20, 1069602), (24, 891335), (30, 713068), (40, 534801), (60, 356534), (89, 240360), (120, 178267), (178, 120180), (267, 80120), (356, 60090), (445, 48072), (534, 40060), (712, 30045), (890, 24036), (1068, 20030), (1335, 16024), (1780, 12018), (2003, 10680), (2136, 10015), (2670, 8012), (3560, 6009), (4006, 5340)]