642165225

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:156

約数の個数: 144

約数和(自身を含む): 1266293952

約数和(自身を除く): 624128727

約数列:

[1, 3, 5, 13, 15, 17, 25, 39, 43, 51, 53, 65, 75, 85, 129, 159, 195, 215, 221, 255, 265, 289, 325, 425, 559, 645, 663, 689, 731, 795, 867, 901, 975, 1075, 1105, 1275, 1325, 1445, 1677, 2067, 2193, 2279, 2703, 2795, 3225, 3315, 3445, 3655, 3757, 3975, 4335, 4505, 5525, 6837, 7225, 8385, 9503, 10335, 10965, 11271, 11395, 11713, 12427, 13515, 13975, 15317, 16575, 17225, 18275, 18785, 21675, 22525, 28509, 29627, 34185, 35139, 37281, 38743, 41925, 45951, 47515, 51675, 54825, 56355, 56975, 58565, 62135, 67575, 76585, 88881, 93925, 116229, 142545, 148135, 161551, 170925, 175695, 186405, 193715, 199121, 229755, 237575, 281775, 292825, 310675, 382925, 444405, 484653, 503659, 581145, 597363, 658631, 712725, 740675, 807755, 878475, 932025, 968575, 995605, 1148775, 1510977, 1975893, 2222025, 2423265, 2518295, 2905725, 2986815, 3293155, 4038775, 4978025, 7554885, 8562203, 9879465, 12116325, 12591475, 14934075, 16465775, 25686609, 37774425, 42811015, 49397325, 128433045, 214055075, 642165225]

約数ペア:

[(1, 642165225), (3, 214055075), (5, 128433045), (13, 49397325), (15, 42811015), (17, 37774425), (25, 25686609), (39, 16465775), (43, 14934075), (51, 12591475), (53, 12116325), (65, 9879465), (75, 8562203), (85, 7554885), (129, 4978025), (159, 4038775), (195, 3293155), (215, 2986815), (221, 2905725), (255, 2518295), (265, 2423265), (289, 2222025), (325, 1975893), (425, 1510977), (559, 1148775), (645, 995605), (663, 968575), (689, 932025), (731, 878475), (795, 807755), (867, 740675), (901, 712725), (975, 658631), (1075, 597363), (1105, 581145), (1275, 503659), (1325, 484653), (1445, 444405), (1677, 382925), (2067, 310675), (2193, 292825), (2279, 281775), (2703, 237575), (2795, 229755), (3225, 199121), (3315, 193715), (3445, 186405), (3655, 175695), (3757, 170925), (3975, 161551), (4335, 148135), (4505, 142545), (5525, 116229), (6837, 93925), (7225, 88881), (8385, 76585), (9503, 67575), (10335, 62135), (10965, 58565), (11271, 56975), (11395, 56355), (11713, 54825), (12427, 51675), (13515, 47515), (13975, 45951), (15317, 41925), (16575, 38743), (17225, 37281), (18275, 35139), (18785, 34185), (21675, 29627), (22525, 28509)]