21624850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:164

約数の個数: 96

約数和(自身を含む): 48746880

約数和(自身を除く): 27122030

約数列:

[1, 2, 5, 10, 13, 17, 19, 25, 26, 34, 38, 50, 65, 85, 95, 103, 130, 170, 190, 206, 221, 247, 323, 325, 425, 442, 475, 494, 515, 646, 650, 850, 950, 1030, 1105, 1235, 1339, 1615, 1751, 1957, 2210, 2470, 2575, 2678, 3230, 3502, 3914, 4199, 5150, 5525, 6175, 6695, 8075, 8398, 8755, 9785, 11050, 12350, 13390, 16150, 17510, 19570, 20995, 22763, 25441, 33269, 33475, 41990, 43775, 45526, 48925, 50882, 66538, 66950, 87550, 97850, 104975, 113815, 127205, 166345, 209950, 227630, 254410, 332690, 432497, 569075, 636025, 831725, 864994, 1138150, 1272050, 1663450, 2162485, 4324970, 10812425, 21624850]

約数ペア:

[(1, 21624850), (2, 10812425), (5, 4324970), (10, 2162485), (13, 1663450), (17, 1272050), (19, 1138150), (25, 864994), (26, 831725), (34, 636025), (38, 569075), (50, 432497), (65, 332690), (85, 254410), (95, 227630), (103, 209950), (130, 166345), (170, 127205), (190, 113815), (206, 104975), (221, 97850), (247, 87550), (323, 66950), (325, 66538), (425, 50882), (442, 48925), (475, 45526), (494, 43775), (515, 41990), (646, 33475), (650, 33269), (850, 25441), (950, 22763), (1030, 20995), (1105, 19570), (1235, 17510), (1339, 16150), (1615, 13390), (1751, 12350), (1957, 11050), (2210, 9785), (2470, 8755), (2575, 8398), (2678, 8075), (3230, 6695), (3502, 6175), (3914, 5525), (4199, 5150)]