28493540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{167}}^1\times {\mathrm{449}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 63504000

約数和(自身を除く): 35010460

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 167, 190, 334, 380, 449, 668, 835, 898, 1670, 1796, 2245, 3173, 3340, 4490, 6346, 8531, 8980, 12692, 15865, 17062, 31730, 34124, 42655, 63460, 74983, 85310, 149966, 170620, 299932, 374915, 749830, 1424677, 1499660, 2849354, 5698708, 7123385, 14246770, 28493540]

約数ペア:

[(1, 28493540), (2, 14246770), (4, 7123385), (5, 5698708), (10, 2849354), (19, 1499660), (20, 1424677), (38, 749830), (76, 374915), (95, 299932), (167, 170620), (190, 149966), (334, 85310), (380, 74983), (449, 63460), (668, 42655), (835, 34124), (898, 31730), (1670, 17062), (1796, 15865), (2245, 12692), (3173, 8980), (3340, 8531), (4490, 6346)]