21509012

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{619}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 46247040

約数和(自身を除く): 24738028

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 73, 119, 146, 238, 292, 476, 511, 619, 1022, 1238, 1241, 2044, 2476, 2482, 4333, 4964, 8666, 8687, 10523, 17332, 17374, 21046, 34748, 42092, 45187, 73661, 90374, 147322, 180748, 294644, 316309, 632618, 768179, 1265236, 1536358, 3072716, 5377253, 10754506, 21509012]

約数ペア:

[(1, 21509012), (2, 10754506), (4, 5377253), (7, 3072716), (14, 1536358), (17, 1265236), (28, 768179), (34, 632618), (68, 316309), (73, 294644), (119, 180748), (146, 147322), (238, 90374), (292, 73661), (476, 45187), (511, 42092), (619, 34748), (1022, 21046), (1238, 17374), (1241, 17332), (2044, 10523), (2476, 8687), (2482, 8666), (4333, 4964)]