209216540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^2\times {\mathrm{151}}^1$

素因数の和:319

約数の個数: 72

約数和(自身を含む): 482898528

約数和(自身を除く): 273681988

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 73, 130, 146, 151, 260, 292, 302, 365, 604, 730, 755, 949, 1460, 1510, 1898, 1963, 3020, 3796, 3926, 4745, 5329, 7852, 9490, 9815, 10658, 11023, 18980, 19630, 21316, 22046, 26645, 39260, 44092, 53290, 55115, 69277, 106580, 110230, 138554, 143299, 220460, 277108, 286598, 346385, 573196, 692770, 716495, 804679, 1385540, 1432990, 1609358, 2865980, 3218716, 4023395, 8046790, 10460827, 16093580, 20921654, 41843308, 52304135, 104608270, 209216540]

約数ペア:

[(1, 209216540), (2, 104608270), (4, 52304135), (5, 41843308), (10, 20921654), (13, 16093580), (20, 10460827), (26, 8046790), (52, 4023395), (65, 3218716), (73, 2865980), (130, 1609358), (146, 1432990), (151, 1385540), (260, 804679), (292, 716495), (302, 692770), (365, 573196), (604, 346385), (730, 286598), (755, 277108), (949, 220460), (1460, 143299), (1510, 138554), (1898, 110230), (1963, 106580), (3020, 69277), (3796, 55115), (3926, 53290), (4745, 44092), (5329, 39260), (7852, 26645), (9490, 22046), (9815, 21316), (10658, 19630), (11023, 18980)]