19685900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{797}}^1$

素因数の和:843

約数の個数: 72

約数和(自身を含む): 48486480

約数和(自身を除く): 28800580

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 25, 26, 38, 50, 52, 65, 76, 95, 100, 130, 190, 247, 260, 325, 380, 475, 494, 650, 797, 950, 988, 1235, 1300, 1594, 1900, 2470, 3188, 3985, 4940, 6175, 7970, 10361, 12350, 15143, 15940, 19925, 20722, 24700, 30286, 39850, 41444, 51805, 60572, 75715, 79700, 103610, 151430, 196859, 207220, 259025, 302860, 378575, 393718, 518050, 757150, 787436, 984295, 1036100, 1514300, 1968590, 3937180, 4921475, 9842950, 19685900]

約数ペア:

[(1, 19685900), (2, 9842950), (4, 4921475), (5, 3937180), (10, 1968590), (13, 1514300), (19, 1036100), (20, 984295), (25, 787436), (26, 757150), (38, 518050), (50, 393718), (52, 378575), (65, 302860), (76, 259025), (95, 207220), (100, 196859), (130, 151430), (190, 103610), (247, 79700), (260, 75715), (325, 60572), (380, 51805), (475, 41444), (494, 39850), (650, 30286), (797, 24700), (950, 20722), (988, 19925), (1235, 15940), (1300, 15143), (1594, 12350), (1900, 10361), (2470, 7970), (3188, 6175), (3985, 4940)]