20974850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{61}}^1$

素因数の和:132

約数の個数: 72

約数和(自身を含む): 44640372

約数和(自身を除く): 23665522

約数列:

[1, 2, 5, 10, 13, 23, 25, 26, 46, 50, 61, 65, 115, 122, 130, 230, 299, 305, 325, 529, 575, 598, 610, 650, 793, 1058, 1150, 1403, 1495, 1525, 1586, 2645, 2806, 2990, 3050, 3965, 5290, 6877, 7015, 7475, 7930, 13225, 13754, 14030, 14950, 18239, 19825, 26450, 32269, 34385, 35075, 36478, 39650, 64538, 68770, 70150, 91195, 161345, 171925, 182390, 322690, 343850, 419497, 455975, 806725, 838994, 911950, 1613450, 2097485, 4194970, 10487425, 20974850]

約数ペア:

[(1, 20974850), (2, 10487425), (5, 4194970), (10, 2097485), (13, 1613450), (23, 911950), (25, 838994), (26, 806725), (46, 455975), (50, 419497), (61, 343850), (65, 322690), (115, 182390), (122, 171925), (130, 161345), (230, 91195), (299, 70150), (305, 68770), (325, 64538), (529, 39650), (575, 36478), (598, 35075), (610, 34385), (650, 32269), (793, 26450), (1058, 19825), (1150, 18239), (1403, 14950), (1495, 14030), (1525, 13754), (1586, 13225), (2645, 7930), (2806, 7475), (2990, 7015), (3050, 6877), (3965, 5290)]