20742680

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{557}}^1$

素因数の和:601

約数の個数: 96

約数和(自身を含む): 57250800

約数和(自身を除く): 36508120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 49, 56, 70, 76, 95, 98, 133, 140, 152, 190, 196, 245, 266, 280, 380, 392, 490, 532, 557, 665, 760, 931, 980, 1064, 1114, 1330, 1862, 1960, 2228, 2660, 2785, 3724, 3899, 4456, 4655, 5320, 5570, 7448, 7798, 9310, 10583, 11140, 15596, 18620, 19495, 21166, 22280, 27293, 31192, 37240, 38990, 42332, 52915, 54586, 74081, 77980, 84664, 105830, 109172, 136465, 148162, 155960, 211660, 218344, 272930, 296324, 370405, 423320, 518567, 545860, 592648, 740810, 1037134, 1091720, 1481620, 2074268, 2592835, 2963240, 4148536, 5185670, 10371340, 20742680]

約数ペア:

[(1, 20742680), (2, 10371340), (4, 5185670), (5, 4148536), (7, 2963240), (8, 2592835), (10, 2074268), (14, 1481620), (19, 1091720), (20, 1037134), (28, 740810), (35, 592648), (38, 545860), (40, 518567), (49, 423320), (56, 370405), (70, 296324), (76, 272930), (95, 218344), (98, 211660), (133, 155960), (140, 148162), (152, 136465), (190, 109172), (196, 105830), (245, 84664), (266, 77980), (280, 74081), (380, 54586), (392, 52915), (490, 42332), (532, 38990), (557, 37240), (665, 31192), (760, 27293), (931, 22280), (980, 21166), (1064, 19495), (1114, 18620), (1330, 15596), (1862, 11140), (1960, 10583), (2228, 9310), (2660, 7798), (2785, 7448), (3724, 5570), (3899, 5320), (4456, 4655)]