19551720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2671}}^1$

素因数の和:2746

約数の個数: 64

約数和(自身を含む): 59639040

約数和(自身を除く): 40087320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 61, 120, 122, 183, 244, 305, 366, 488, 610, 732, 915, 1220, 1464, 1830, 2440, 2671, 3660, 5342, 7320, 8013, 10684, 13355, 16026, 21368, 26710, 32052, 40065, 53420, 64104, 80130, 106840, 160260, 162931, 320520, 325862, 488793, 651724, 814655, 977586, 1303448, 1629310, 1955172, 2443965, 3258620, 3910344, 4887930, 6517240, 9775860, 19551720]

約数ペア:

[(1, 19551720), (2, 9775860), (3, 6517240), (4, 4887930), (5, 3910344), (6, 3258620), (8, 2443965), (10, 1955172), (12, 1629310), (15, 1303448), (20, 977586), (24, 814655), (30, 651724), (40, 488793), (60, 325862), (61, 320520), (120, 162931), (122, 160260), (183, 106840), (244, 80130), (305, 64104), (366, 53420), (488, 40065), (610, 32052), (732, 26710), (915, 21368), (1220, 16026), (1464, 13355), (1830, 10684), (2440, 8013), (2671, 7320), (3660, 5342)]