19000020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{24359}}^1$

素因数の和:24384

約数の個数: 48

約数和(自身を含む): 57294720

約数和(自身を除く): 38294700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 24359, 48718, 73077, 97436, 121795, 146154, 243590, 292308, 316667, 365385, 487180, 633334, 730770, 950001, 1266668, 1461540, 1583335, 1900002, 3166670, 3800004, 4750005, 6333340, 9500010, 19000020]

約数ペア:

[(1, 19000020), (2, 9500010), (3, 6333340), (4, 4750005), (5, 3800004), (6, 3166670), (10, 1900002), (12, 1583335), (13, 1461540), (15, 1266668), (20, 950001), (26, 730770), (30, 633334), (39, 487180), (52, 365385), (60, 316667), (65, 292308), (78, 243590), (130, 146154), (156, 121795), (195, 97436), (260, 73077), (390, 48718), (780, 24359)]