19557820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:151

約数の個数: 96

約数和(自身を含む): 47246976

約数和(自身を除く): 27689156

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 41, 46, 61, 68, 82, 85, 92, 115, 122, 164, 170, 205, 230, 244, 305, 340, 391, 410, 460, 610, 697, 782, 820, 943, 1037, 1220, 1394, 1403, 1564, 1886, 1955, 2074, 2501, 2788, 2806, 3485, 3772, 3910, 4148, 4715, 5002, 5185, 5612, 6970, 7015, 7820, 9430, 10004, 10370, 12505, 13940, 14030, 16031, 18860, 20740, 23851, 25010, 28060, 32062, 42517, 47702, 50020, 57523, 64124, 80155, 85034, 95404, 115046, 119255, 160310, 170068, 212585, 230092, 238510, 287615, 320620, 425170, 477020, 575230, 850340, 977891, 1150460, 1955782, 3911564, 4889455, 9778910, 19557820]

約数ペア:

[(1, 19557820), (2, 9778910), (4, 4889455), (5, 3911564), (10, 1955782), (17, 1150460), (20, 977891), (23, 850340), (34, 575230), (41, 477020), (46, 425170), (61, 320620), (68, 287615), (82, 238510), (85, 230092), (92, 212585), (115, 170068), (122, 160310), (164, 119255), (170, 115046), (205, 95404), (230, 85034), (244, 80155), (305, 64124), (340, 57523), (391, 50020), (410, 47702), (460, 42517), (610, 32062), (697, 28060), (782, 25010), (820, 23851), (943, 20740), (1037, 18860), (1220, 16031), (1394, 14030), (1403, 13940), (1564, 12505), (1886, 10370), (1955, 10004), (2074, 9430), (2501, 7820), (2788, 7015), (2806, 6970), (3485, 5612), (3772, 5185), (3910, 5002), (4148, 4715)]