28350180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{659}}^1$

素因数の和:913

約数の個数: 72

約数和(自身を含む): 86486400

約数和(自身を除く): 58136220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 239, 478, 659, 717, 956, 1195, 1318, 1434, 1977, 2151, 2390, 2636, 2868, 3295, 3585, 3954, 4302, 4780, 5931, 6590, 7170, 7908, 8604, 9885, 10755, 11862, 13180, 14340, 19770, 21510, 23724, 29655, 39540, 43020, 59310, 118620, 157501, 315002, 472503, 630004, 787505, 945006, 1417509, 1575010, 1890012, 2362515, 2835018, 3150020, 4725030, 5670036, 7087545, 9450060, 14175090, 28350180]

約数ペア:

[(1, 28350180), (2, 14175090), (3, 9450060), (4, 7087545), (5, 5670036), (6, 4725030), (9, 3150020), (10, 2835018), (12, 2362515), (15, 1890012), (18, 1575010), (20, 1417509), (30, 945006), (36, 787505), (45, 630004), (60, 472503), (90, 315002), (180, 157501), (239, 118620), (478, 59310), (659, 43020), (717, 39540), (956, 29655), (1195, 23724), (1318, 21510), (1434, 19770), (1977, 14340), (2151, 13180), (2390, 11862), (2636, 10755), (2868, 9885), (3295, 8604), (3585, 7908), (3954, 7170), (4302, 6590), (4780, 5931)]