28821720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{461}}^1\times {\mathrm{521}}^1$

素因数の和:996

約数の個数: 64

約数和(自身を含む): 86819040

約数和(自身を除く): 57997320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 461, 521, 922, 1042, 1383, 1563, 1844, 2084, 2305, 2605, 2766, 3126, 3688, 4168, 4610, 5210, 5532, 6252, 6915, 7815, 9220, 10420, 11064, 12504, 13830, 15630, 18440, 20840, 27660, 31260, 55320, 62520, 240181, 480362, 720543, 960724, 1200905, 1441086, 1921448, 2401810, 2882172, 3602715, 4803620, 5764344, 7205430, 9607240, 14410860, 28821720]

約数ペア:

[(1, 28821720), (2, 14410860), (3, 9607240), (4, 7205430), (5, 5764344), (6, 4803620), (8, 3602715), (10, 2882172), (12, 2401810), (15, 1921448), (20, 1441086), (24, 1200905), (30, 960724), (40, 720543), (60, 480362), (120, 240181), (461, 62520), (521, 55320), (922, 31260), (1042, 27660), (1383, 20840), (1563, 18440), (1844, 15630), (2084, 13830), (2305, 12504), (2605, 11064), (2766, 10420), (3126, 9220), (3688, 7815), (4168, 6915), (4610, 6252), (5210, 5532)]