281051888

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{1303}}^1$

素因数の和:1402

約数の個数: 80

約数和(自身を含む): 631584576

約数和(自身を除く): 350532688

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 61, 68, 104, 122, 136, 208, 221, 244, 272, 442, 488, 793, 884, 976, 1037, 1303, 1586, 1768, 2074, 2606, 3172, 3536, 4148, 5212, 6344, 8296, 10424, 12688, 13481, 16592, 16939, 20848, 22151, 26962, 33878, 44302, 53924, 67756, 79483, 88604, 107848, 135512, 158966, 177208, 215696, 271024, 287963, 317932, 354416, 575926, 635864, 1033279, 1151852, 1271728, 1351211, 2066558, 2303704, 2702422, 4133116, 4607408, 5404844, 8266232, 10809688, 16532464, 17565743, 21619376, 35131486, 70262972, 140525944, 281051888]

約数ペア:

[(1, 281051888), (2, 140525944), (4, 70262972), (8, 35131486), (13, 21619376), (16, 17565743), (17, 16532464), (26, 10809688), (34, 8266232), (52, 5404844), (61, 4607408), (68, 4133116), (104, 2702422), (122, 2303704), (136, 2066558), (208, 1351211), (221, 1271728), (244, 1151852), (272, 1033279), (442, 635864), (488, 575926), (793, 354416), (884, 317932), (976, 287963), (1037, 271024), (1303, 215696), (1586, 177208), (1768, 158966), (2074, 135512), (2606, 107848), (3172, 88604), (3536, 79483), (4148, 67756), (5212, 53924), (6344, 44302), (8296, 33878), (10424, 26962), (12688, 22151), (13481, 20848), (16592, 16939)]