209419740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{487}}^1\times {\mathrm{2389}}^1$

素因数の和:2891

約数の個数: 72

約数和(自身を含む): 636810720

約数和(自身を除く): 427390980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 487, 974, 1461, 1948, 2389, 2435, 2922, 4383, 4778, 4870, 5844, 7167, 7305, 8766, 9556, 9740, 11945, 14334, 14610, 17532, 21501, 21915, 23890, 28668, 29220, 35835, 43002, 43830, 47780, 71670, 86004, 87660, 107505, 143340, 215010, 430020, 1163443, 2326886, 3490329, 4653772, 5817215, 6980658, 10470987, 11634430, 13961316, 17451645, 20941974, 23268860, 34903290, 41883948, 52354935, 69806580, 104709870, 209419740]

約数ペア:

[(1, 209419740), (2, 104709870), (3, 69806580), (4, 52354935), (5, 41883948), (6, 34903290), (9, 23268860), (10, 20941974), (12, 17451645), (15, 13961316), (18, 11634430), (20, 10470987), (30, 6980658), (36, 5817215), (45, 4653772), (60, 3490329), (90, 2326886), (180, 1163443), (487, 430020), (974, 215010), (1461, 143340), (1948, 107505), (2389, 87660), (2435, 86004), (2922, 71670), (4383, 47780), (4778, 43830), (4870, 43002), (5844, 35835), (7167, 29220), (7305, 28668), (8766, 23890), (9556, 21915), (9740, 21501), (11945, 17532), (14334, 14610)]