20973700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{829}}^1$

素因数の和:877

約数の個数: 72

約数和(自身を含む): 51871680

約数和(自身を除く): 30897980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 25, 44, 46, 50, 55, 92, 100, 110, 115, 220, 230, 253, 275, 460, 506, 550, 575, 829, 1012, 1100, 1150, 1265, 1658, 2300, 2530, 3316, 4145, 5060, 6325, 8290, 9119, 12650, 16580, 18238, 19067, 20725, 25300, 36476, 38134, 41450, 45595, 76268, 82900, 91190, 95335, 182380, 190670, 209737, 227975, 381340, 419474, 455950, 476675, 838948, 911900, 953350, 1048685, 1906700, 2097370, 4194740, 5243425, 10486850, 20973700]

約数ペア:

[(1, 20973700), (2, 10486850), (4, 5243425), (5, 4194740), (10, 2097370), (11, 1906700), (20, 1048685), (22, 953350), (23, 911900), (25, 838948), (44, 476675), (46, 455950), (50, 419474), (55, 381340), (92, 227975), (100, 209737), (110, 190670), (115, 182380), (220, 95335), (230, 91190), (253, 82900), (275, 76268), (460, 45595), (506, 41450), (550, 38134), (575, 36476), (829, 25300), (1012, 20725), (1100, 19067), (1150, 18238), (1265, 16580), (1658, 12650), (2300, 9119), (2530, 8290), (3316, 6325), (4145, 5060)]