28979860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15923}}^1$

素因数の和:15952

約数の個数: 48

約数和(自身を含む): 74906496

約数和(自身を除く): 45926636

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 15923, 31846, 63692, 79615, 111461, 159230, 206999, 222922, 318460, 413998, 445844, 557305, 827996, 1034995, 1114610, 1448993, 2069990, 2229220, 2897986, 4139980, 5795972, 7244965, 14489930, 28979860]

約数ペア:

[(1, 28979860), (2, 14489930), (4, 7244965), (5, 5795972), (7, 4139980), (10, 2897986), (13, 2229220), (14, 2069990), (20, 1448993), (26, 1114610), (28, 1034995), (35, 827996), (52, 557305), (65, 445844), (70, 413998), (91, 318460), (130, 222922), (140, 206999), (182, 159230), (260, 111461), (364, 79615), (455, 63692), (910, 31846), (1820, 15923)]